All of the cats who reside at the Ernest Hemingway Museum in Key West, Florida, carry at least one dominant allele for polydactyly. However, only about half the cats display an extra toe on their paws; the others have the expected number of toes. Which of the following is a possible explanation for this? O Variable expressivity O Variable penetrance O Cytoplasmic inheritance O Incomplete dominance Question 6 A gene that controls more than one trait is (Be sure to check your spelling on this one.)

All of the cats who reside at the Ernest Hemingway Museum in Key West, Florida, carry at least one dominant allele for polydactyly. However, only about half the cats display an extra toe on their paws; the others have the expected number of toes. Which of the following is a possible explanation for this? O Variable expressivity O Variable penetrance O Cytoplasmic inheritance O Incomplete dominance Question 6 A gene that controls more than one trait is (Be sure to check your spelling on this one.)

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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If two alleles show incomplete dominance O the genotypes of homozygous dominant and heterozygous individuals are difficult to determine. O the genotype of heterozygous individuals can be directly determined from phenotype. O they are inherited at a 3:1 ratio. O they cannot be assessed using the Hardy-Weinberg equation, as there is no recessive allele. O they will be favored during recombination over the recessive allele.
These F1 hybrids illustrate a second significant departure from complete dominance. The progeny looks like both parents, which means that neitherthe spotted nor the dotted allele is dominant or recessive to the other. why?
What explains how the parents in a family both have the same eye color, but some of their children have a different eye color? Assume for this example that eye color is determined by a single gene. ● One parent is homozygous dominant, and the other homozygous recessive for a gene that controls eye color allowing some of the children to express a different trait. O The parents are both heterozygous for a gene that controls eye color allowing some of the children to get two recessive alleles. O The parents are both homozygous dominant for a gene that controls eye color allowing some of the children to get two recessive alleles. O One parent is homozygous dominant, and the other heterozygous for a gene that controls eye color allowing some of the children to express a different trait.
Parts a-c of this question address the crossing of parents with the following genotypes: A/a; B/b; C/c; D/d; E/e; F/f x a/a; b/b; c/c; d/d; e/e; f/f a. What is the probability that an F1 progeny that is homozygous recessive at every locus will be produced? For values greater than 0, please answer as a fraction. b. What is the probability that an F1 progeny that is homozygous dominant at every locus will be produced? For values greater than 0, please answer as a fraction. c. Would one of the parents in this cross be considered a test cross parent (tester)? Yes, the parent on the left, with genotype A/a; B/b; C/c; D/d; E/e; F/f would be the test cross parent (tester). Yes, the parent on the right, with genotype a/a; b/b; c/c; d/d; e/e; f/f would be the test cross parent (tester). Yes, both parents would be considered a test cross parent (tester) No, neither parent would be considered a test cross parent (tester) None of the above and I have explained my…
In Drosophila, a heterozygous female for the X-linkedrecessive traits a, b, and c was crossed to a male that phenotypically expressed a, b, and c. The offspring occurred inthe following phenotypic ratios.+ b c 460a + + 450a b c 32+ + + 38a + c 11+ b + 9 No other phenotypes were observed.(a) What is the genotypic arrangement of the alleles ofthese genes on the X chromosome of the female?
Could the trait presented in the pedigree shown be caused by an X-linked recessive allele? Why or why not? 11 ||| IV ■ 5 6 Yes, with individual 2 of generation I being heterozygous. No, the offspring of 7 and 8 contradict an X-linked recessive inheritance. No, the offspring of 3 and 4 of generation II contradict an X-linked recessive inheritance. No, the offspring of 1 and 2 of generation I contradict an X-linked recessive inheritance.
6) Duchenne muscular dystrophy (DMD) is a muscle wasting disease and is an X-linked recessive disorder. A man with this disease has children with a woman who does not have the disease, but her father did. If they had a ason, what would be the chance that he would have DMD? If they had a daughter? Any child? Construct a Punnett square to determine the answers. 10) In cats, coat color is completely dominant to albino (Mendelian genetics) and is an autosomal trait. Playa is a female albino cat and is crossed with Azul, a black-coated male. In their first litter, they have 4 black kittens and 2 albino kittens. If in the second litter, they have 8 kittens, how many of the kittens are expected to be albino? Construct a Punnett Square to determine the answer.
What are the F1 phenotypes expected from a cross between a heterozygous red-eyed female fruit fly (XWXw) and a hemizygous red-eyed male fruit fly (XWY)? half of the F1 males will have white eyes, and all F1 females will have red eyes half of the F1 females will have white eyes, and half of the F1 males will have red eyes all F1 males will have white eyes, and all F1 females will have red eyes all F1 males will have white eyes, and all F1 females will have white eyes all F1 progeny will have red eyes
A black Labrador Retriever is mated with a brown lab, but their offspring consists of black, brown AND golden labs. The two genes involved in producing this phenotype are a gene that controls pigment color and a gene that controls if pigment is deposited. This is an example of: Incomplete Dominance Pleiotropy O Epistasis O Multiple Alleles
In 1952, an article in the British Medical Journalreported interesting differences in the behavior ofblood plasma obtained from several people who suffered from X-linked recessive hemophilia. Whenmixed together, the cell-free blood plasma from certain combinations of individuals could form clots inthe test tube. For example, the following table showswhether clots could form (+) or not (−) in variouscombinations of plasma from four people withhemophilia:1 and 1 − 2 and 3 +1 and 2 − 2 and 4 +1 and 3 + 3 and 3 −1 and 4 + 3 and 4 −2 and 2 − 4 and 4 −What do these data tell you about the inheritance ofhemophilia in these individuals? Do these data allowyou to exclude any models for the biochemical pathway governing blood clotting?
The presence of horns on satyrs is produced by a sex-influenced autosomal gene that is dominant in males and recessive in females. A horned female is crossed with a hornless male. The F1 are then intercrossed to produce the F2. What proportion of the F2 generation will be horned? O % of the males and none of the females O % of males and % of females O All of the males and none of the females O % of the males and % of females O ½ of the males and none of the females
To play Jeopardy, the answer is given. You must supply the question. Choose the best question for the following answer: Mutant allele causing malfunction of the wild-type allele, giving rise to a dominant phenotype. What is codominance? What is incomplete dominance? O What is dominant negative? O What is haploinsufficiency?