Study Guide Essay Example

Study Guide Essay PCB 3063 Spring 2012 Problem Set 1 ANSWERS 1. Determine the types of gametes produced by each of the following individuals: a. Aa1/2 A, 1/2 a b. AaBb1/4 AB, 1/4 Ab, 1/4 aB, 1/4 ab c. AABb1/2 AB, 1/ Ab d. AaBBCc1/4 ABC, 1/4 aBC, 1/4 ABc, 1/4 aBc 2. Use the Punnett square to determine the genotypes in the progeny of each of the following crosses: a. Dd x Dd b. AaBB x AaBB c. CcEE x CCEe Notice: in every case, each parent produces only two types of gametes. [pic] 3. In guinea pigs, rough coat (R) is dominant over smooth coat (r). A rough coated guinea pig is bred to a smooth one, giving eight rough and seven smooth progeny in the F1 generation. a. What are the genotypes of the parents and their offspring? The recessive trait is observed in the progeny, so the rough-coated parent must be heterozygous. P: Rr (rough) x rr (smooth) F1: 1/2 Rr, 1/2 rr b. If one of the rough F1 animals is mated to its rough parent, what progeny would you expect? This would be a monohybrid cross: Rr x Rr =gt; 1/4 RR, 1/2 Rr, 1/4 rr. 4. In maize, a dominant allele A is necessary for seed color, as opposed to colorless (a). We will write a custom essay sample on Study Guide specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Study Guide specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Study Guide specifically for you FOR ONLY $16.38 $13.9/page Hire Writer Another gene has a recessive allele w that results in waxy starch, as opposed to normal starch (W). The two genes segregate independently. What are the phenotypes and relative frequencies of offspring from each of the following crosses? Notice: The question specifies phenotypic ratios. a. AaWw x AaWw This is a dihybrid cross: 9/16 A_W_ (normal) 3/16 A_ww (waxy) 3/16 aaW_ (colorless) 1/16 aaww (waxy, colorless) b. AaWW x AaWW This works like a monohybrid cross because both parents are homozygotic for WW. 3/4 A_WW (normal), 1/4 aaWW (colorless) 5. In humans, alkaptonuria is a metabolic disorder in which affected persons produce black urine. Alkaptonuria results from an autosomal allele (a) that is recessive to the allele for normal metabolism (A). Sally has normal metabolism, but her brother has alkaptonuria. Sally’s father has alkaptonuria, and her mother has normal metabolism. a. Construct a pedigree of this family and indicate the genotypes of Sally, her mother, her father, and her brother. Sally’s mother must be a carrier. Sally is also a carrier because she received one alkaptonuria allele from her father. [pic] Caution: this is not X-linked inheritance. b. If Sally’s parents have another child, what is the probability that this child will have alkaptonuria? aa (father) x Aa (mother) 1/2 Aa (normal metabolism) 1/2 aa (alkaptonuria) 6. Both John and Cathy have normal vision. After 10 years of marriage to John, Cathy gave birth to a color-blind daughter (color blindness is an X-linked recessive trait). John filed for divorce, claiming that he is not the father of the child. Is John justified in his claim of non-paternity? Explain your answer. Give the genotypes of John, Cathy and the child. Since color blindness is an X-linked recessive trait, the color-blind daughter must be homozygous for the color blindness allele. That means that she inherited a color blindness allele from each parent. John can not be the father, because he has no color blindness alleles (he has normal vision, so he is hemizygous for the normal vision allele). Cathy is a carrier. She is also a big cheater! John: CY Cathy: Cc Daughter: cc Whoever the father of the girl is must be cY and color blind. [pic] 7. If the pedigree above illustrates an autosomal dominant trait, then individual I-1: (Note: the â€Å"carrier† symbol was not used in the above pedigree. a. must be homozygous dominant b. must be heterozygous c. must be homozygous recessive d. could be either homozygous dominant or heterozygous e. could be either homozygous recessive or heterozygous This is a dominant trait and I-1 is affected, but he had unaffected children. Therefore he must be heterozygous. 8. The following pedigree is f or an X-linked trait: (Note: the â€Å"carrier† symbol was not used in this pedigree. ) [pic] a. Is this trait dominant or recessive? Recessive: unaffected females III-4 and IV-1have affected sons. b. Indicate the genotypes of all the individuals in the pedigree. Affected males are hemizygous for the recessive allele †¢ Affected females are homozygous for the recessive allele †¢ Unaffected males are hemizygous for the dominant allele †¢ Heterozygotes are carrier females Pedigree with the carrier symbols: [pic] Notice: the exact genotype of individual IV-4 is uncertain. 9. The following pedigree illustrates the inheritance of Nance-Horan syndrome, a rare X-linked genetic condition in which affected persons have cataracts and abnormally shaped teeth. (Note: the â€Å"carrier† symbol was not used in this pedigree. [pic] If III-2 and III-7 mated, what would be the expected genotypic and phenotypic ratios in their progeny? Draw a Punnett square. The trait is recessive because some unaffected mothers have affected sons (and males get their X from their mothers). III-2 is an affected male, so he must be hemizygous for the condition. III-7 is a carrier female because her father is affected. [pic] 10. If traits R1 and R2 exhibit incomplete dominance over each other, what will be the phenotypic ratio in the progeny of the cross R1R1 x R1R2 ? :1 (individual R1R1 produces only one type of gamete) 1/2 R1R1, 1/2 R1R2 11. In shorthorn cattle, coat color may be red, white, or roan. Roan is an intermediate phenotype. The following data were obtained from var ious crosses: red x red-gt; all red white x white-gt; all white red x white-gt; all roan roan x roan-gt; 1/4 red: 1/2 roan: 1/4 white a. How is coat color inherited? Incomplete dominance: heterozygotes have an intermediate color (roan) b. What are the genotypes of parents and offspring in each cross? RR x RR =gt; all RR rr x rr =gt; all rr RR x rr =gt; all Rr Rr x Rr =gt; 1/4 RR, 2/4 Rr, 1/4 rr [pic] 12. Bar is an X-linked mutation in Drosophila that exhibits incomplete dominance. Flies that are homozygous for Bar have bar-shaped eyes. Heterozygous flies have bean-shaped eyes (an intermediate phenotype). a. What will be the outcome of a cross between a normal female and a bar-eyed male? Normal females must be homozygous for the normal allele because Bar is an incomplete dominant. Bar-eyed males are hemyzygous Bar. [pic] b. Use the Punnett square to determine the genotypes and phenotypes of the F2 generation [pic] Note: always indicate sex along with the phenotypes for X-linked inheritance. 13. If traits LM and LN exhibit codominance relative to each other, what will be the phenotypic ratio in the progeny of the cross LMLN x LMLN ? 1:2:1 (monohybrid ratio): 1/4 LMLM (M), 2/4 LMLN(MN), 1/4 LNLN (N) 14. In a rare species of frog, red color (Y) is dominant over yellow color (y, a null allele). The character is autosomal. The cross YY x Yy produced over 100 frogs: 96% red and 4% yellow. Which complication of Mendelian genetics can explain this outcome? a. recessive lethality of the y allele . codominance c. incomplete dominance d. incomplete penetrance e. variable expressivity All the frogs in F1 are Y_ so they should all be red, but a small percentage is not. There are no yy individuals, so recessive lethality can not explain this. It is not incomplete dominance or codominance, because those would yield 1:1 ratios. It is not variable expressivity because yellow is a recessive phenotype, not a var iation of the dominant phenotype. 15. In foxes, two alleles of a single gene, P and p, may result in lethality (PP), platinum coat (Pp), or silver coat (pp). Notice: this is an autosomal trait because nothing is indicated otherwise. a. Is the P allele behaving dominantly or recessively in causing lethality? Recessive: heterozygotes survive. b. Is the P allele behaving dominantly or recessively in causing platinum coat color? Dominant: heterozygotes are platinum, while the pp homozygotes are silver (two p alleles are necessary for the silver coat, therefore silver is recessive). c. What ratios are obtained when platinum foxes are interbred? Pp x Pp =gt; 1/4 PP (dead), 1/2 Pp (platinum), 1/4 pp (silver) Apparent ratio: 2/3 platinum: 1/3 silver [pic] 16. In a rare species of duck there is an X-linked allele (E1) that results in animals with only one eye (pictured above). The normal phenotype results from the wild-type allele (E), which is also necessary for survival. Use the Punnet square to determine the genotypic and phenotypic ratios in the progeny of a cross between a one-eyed female and a normal male. Since E is necessary for survival, the E allele is recessive in causing lethality (because homozygous E’E’ would die) but dominant in causing the one-eye condition (since only heterozygotes would be able to carry the E’ allele, and they would be one-eyed). Notice: the one-eyed male (pictured above) cannot occur! [pic] 17. The g allele in the Chupacabra is X-linked recessive lethal. Heterozygous individuals have gray hair instead of the normal black hair. Use the Punnett square to determine the outcome of a cross between a normal male and a gray female. I made this up! The gray female must be heterozygous because she needs at least one copy of the normal allele to survive. Since she’s also gray, the g allele is recessive in causing lethality but dominant in causing color. [pic] Important: always indicate sex along with the phenotypes for X-linked inheritance.

Danny Masterson Loved on Television, Hated in Real Life Professor Ramos Blog

Danny Masterson Loved on Television, Hated in Real Life Growing up, I was obsessed with â€Å"That 70’s Show.† I was so obsessed that I remember wanting to leave school early everyday, so I could get home and watch it. My favorite character in the show was Steven Hyde, I thought everything he said on the show was hysterical. â€Å"Hyde† played the role as a funny, sarcastic teenager and seemed like a fun and loving guy in real life. He was the farthest thing from a fun, loving guy. Daniel Peter Masterson or â€Å"Danny† Masterson, is an American actor, Scientologist and Disc Jockey (a person who introduces and plays recorded popular music). Masterson landed his first role in the movie Beethoven’s Second, but we all know him as Steven Hyde on the television comedy, â€Å"That 70’s Show.† Danny also has a long history in the Church of Scientology, but most recently Masterson played a major role in the netflix show: ‘The Ranch’, playing Colt Bennett’s (Ashton Kutcherâ€℠¢s) brother Rooster Bennett. Danny was fired from the Netflix series after being accused of raping five women in the early 2000’s.   In December of last year, one of Mastersons alleged victims confronted Netflix’s executive producer, Andy Yeatman. Masterson denied any association with the woman and told her that Netflix wouldn’t believe her rape claims. The next day, Masterson was fired from Netflix. Masterson then hired lawyer Thomas Mesereau, the same lawyer Bill Cosby hired for a retrial of sexual assault charges in Pennsylvania. The news of the alleged incidents surfaced publicly in March 2017, when the Los Angeles Police Department started looking into reports of women claiming they were sexually assaulted by Masterson in the early 2000’s. Soon after he was fired, another one of his victims, Chrissie Carnell Bixler, told The Daily Beast that she believes â€Å"Netflix ought to be ashamed of their actions, We get it, You don’t believe us† and â€Å"You knew you had to fire him, but you did a bunch of reshoots so you can finish our rapist’s storyline up and give him a respectable send off† (Bixler). United Talent Agency (UTA), announced they will also no longer be working with Danny Masterson, the management company made the decision not to represent the star because of the accusations brought against him. Danny has also since been replaced on his latest hit show â€Å"The Ranch.† After being fired from â€Å"The Ranch,† Masterson released a statement saying â€Å"I am obviously very disappointed in Netflix’s decision†¦ I have never been charged with a crime, let alone convicted of one. In this Country, you are presumed innocent until proven guilty. However, in the current climate, it seems as if you are presumed guilty the moment you are accused. I understand and look forward to clearing my name once and for all.† Just because Danny has not been officially charged with a crime, there is a sufficient amount of evidence against him. Five women accusing the same person of the same horrible actions does not seem like just a coincidence and should be a very important factor to consider when determining his guiltiness. All of the women involved with accusing Masterson are Scientologists or former Scientologists. The women had reported the incidents to the Church of Scientology which intervened with the women filing police reports. The Church of Scientology wanted to cover up what Danny had done to these women so they submitted over 50 affidavits denying the women’s allegations. Danny has denied all accusations as well, but the Los Angeles Police Department has conducted an on-going investigation on the actor. The events and intriguing evidence against Masterson and the allegations brought against him provide a solid foundation that he should be found guilty. Danny has claimed that the woman who are accusing him of rape, are only making these accusations for â€Å"personal gain† on the AE television series, ‘Leah Remini: Scientology and the Aftermath’. The accusers have reportedly been involved in Scientology and they claim that the Church of Scientology pressured them to not contact authorities regarding Masterson sooner. One of the alleged victims, Bobbette Riales, said that the incidents involving Masterson occured in the middle of their six year relationship and many other times and she claims that at the time of these horrible events she was too afraid to say anything. In Scientology, reporting another Scientologist to law enforcement is considered a â€Å"suppressive act†. The church is known for attacking accusers and demanding that the members of the church take action against accusers. I think this had played a huge role in the girls waiting so long to finally speak up about what Danny had done to them . Some of the Scientology churches Masterson has been involved with have been investigated for human trafficking. All of these victims have had encounters with actress Leah Remini who is involved with the Scientology Celebrity Centre although Leah had nothing to do with the allegations. Remini used to be involved with Scientology and is now an Anti-Scientology Activist. Masterson’s first victim had apparently been drugged at an April 2003 party at Masterson’s house, another victim said Masterson got very violent with her after she had told him no multiple times, she then says she had also been drugged by Masterson. Another victim says â€Å"I said no like 50 times.† Masterson laughed over these allegations. Masterson is facing life in prison if found guilty of these charges, a person can be charged under penal code 667.61 for multiple rape charges and that means life behind bars. I hope Masterson comes to find that this is not a laughing matter and realizes what he has done to these women. Masterson’s accusers were â€Å"handled† by the Church of Scientology a fter trying to come forward about their stories. Remini has interviewed some of the women accusing Masterson on her show but was asked not to air it because of the on-going investigation against him.    You can argue both sides on this matter but with the countless claims and accusations along with the evidence against Masterson, I believe he will be found guilty of all charges he is facing and end up spending his life in prison, which he deserves. Although the Los Angeles DA is reportedly not ready to charge Masterson, there is adequate evidence against him. Masterson has not been charged with any of these crimes yet but once he goes to trial He will more than likely be found guilty. The Church of Scientology has kept these victims quiet for too long, Masterson would have been in prison already if it weren’t for the Church of Scientology trying to save his skin and cover up the horrific things he has done to these women. The truth will come out when Danny goes to trial and I believe he will finally pay for what he has done. Amy Zimmerman, â€Å"Danny Masterson’s Rape Accuesers slam Netflix over ‘The Ranch’ Return†, June 15 2018, Retreived from https://www.thedailybeast.com/danny-mastersons-rape-accusers-slam-netflix-over-the-ranch-return-you-rub-salt-in-our-wounds Stephanie Scholz, â€Å"Scientologists Taking Stand Against Discrimination†, article, Retreieved from https://www.standleague.org/bigotry-and-hate/stop-hate-dont-discriminate.html# Ryan Schwartz, TV Line, June 15 2018, Retreived from https://tvline.com/2018/06/15/danny-masterson-fired-the-ranch-rooster-bennett-leaving-explained-part-5/ Llana Kaplan, â€Å"Independent†, January 5 2018, Article, Retreived from https://www.google.com/amp/s/www.independent.co.uk/arts-entertainment/films/news/danny-masterson-rape-allegations-dropped-management-uta-a8144006.html%3famp â€Å"The Underground Bunker†, Retreived from https://tonyortega.org/2018/02/14/prosecutors-prepare-charges-carrying-life-sentence-for-danny-masterson/ Yashar Ali, â€Å"Despite Overwhelming Evidnece Against Actor Danny Masterson, Case has been Stalled†, News Article November 2 2017, Retreived from https://m.huffpost.com/us/entry/us_59fa8410e4b01b474048242a Danny Masterson Adresses Rape Charges, News article, Retreived from, https://www.tvguide.com/celebrities/danny-masterson/credits/146133/

Cultural Experience Essay Example | Topics and Well Written Essays - 750 words

Cultural Experience - Essay Example It surely was a very different experience for me. I usually don’t get to see males having sexual feelings for each other and that too in full public view. However the gay club didn’t have any restrictions whatsoever and men were allowed to touch each others’ private parts, commit into sexual arousal activities, make-out and so on. The experience taught me that like lesbians have their own rights, gays have theirs too. And they experienced it solely within the domains of the gay clubs that have opened within the different city centers. As far as cultural dynamics are concerned, I learned that those actions and behaviors on the part of the gays were not accepted far and wide. Their actions rested solely within the realms of the gay club. When they stepped out of it, they were ordinary men who would keep a distance from other men. Thus the cultural taboo-ness of the whole saga made it even more appealing. It was a double standards situation happening right in front of me, one set of rules inside the gay club and another one, outside it. The otherness of the event made it very interesting in entirety. The otherness stemmed from the fact that I had never seen such a thing taking place in my entire life. The otherness also came about when I didn’t get to see any women in the gay club, which once again was understandable and a sheer lack of knowledge on my part. But what was really bizarre was the fact that these gays enjoyed the company of one another in explicit ways and made sure all around them knew what they were doing. As a culturally responsive helper, I gained quite a few insights. I learned that it is a taboo within any society to have gay and lesbian relationships but these run deep within any country of the world. There are separate places fixed for such activities where no limitations are bound on the gays. I also learned that everything has its limits and such activities might be considered