3. In seals, the gene for the length of the whiskers has two alleles. The dominant allele (W) codes long whiskers and the recessive allele (w) codes for short whiskers. What is the probability of producing offspring that have short whiskers from a cross of two long-whiskered seals, one that is homozygous dominant and one that is heterozygous? Genotype: Phenotype:

3. In seals, the gene for the length of the whiskers has two alleles. The dominant allele (W) codes long whiskers and the recessive allele (w) codes for short whiskers. What is the probability of producing offspring that have short whiskers from a cross of two long-whiskered seals, one that is homozygous dominant and one that is heterozygous? Genotype: Phenotype:

Name: 3. In seals, the gene for the length of the whiskers has two alleles.
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Description: 3. In seals, the gene for the length of the whiskers has two alleles. The dominant allele (W) codes longwhiskers and the recessive allele (w) codes for short whiskers. What is the probability of producing offspringthat have short whiskers from a cro

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter12: Mendel, Genes, And Inheritance

Section: Chapter Questions

Problem 2TYK: In peas, the allele Le produces tall plants and the allele le produces dwarf plants. The Le allele...

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In cats, the genotype AA produces tabby fur color; Aa is also a tabby, and aa is black. Another gene at a different locus is epistatic to the gene for fur color. When present in its dominant W form (WW or Ww), this gene blocks the formation of fur color and all the offspring are white; ww individuals develop normal fur color. What fur colors, and in what proportions, would you expect from the cross AaWw Aa Ww?
2.In dogs, there is a hereditary deafness caused by a recessive allele, d. A kennel owner has a male dog that she wants to use for breeding purposes if possible. The dog can hear, but the owner is unsure of the genotype. She does a testcross (crosses it to a homozygous recessive dog), and two of the five offspring are deaf. This means that the male dog A.has the genotype DD B.has the genotype Dd C.is still of unknown genotype since there were offspring of both deaf and hearing phenotypes. D.has the genotype dd
1. If a purebred pea plant with purple flowers was crossed with a purebred pea plant with white flowers, all of the offspring's flowers ended up being purple. In this instancethe WHITE flower trait is considered to be what?
4. The ruffed chicken has an under-chin wattle. A smooth wattle (S) is dominant over a wrinkled wattle (s). A red wattle (HR) is incompletely dominant with a white wattle (HW) so that an individual with HRHW will have a pink wattle. A chicken with a wrinkled red wattle is mated to a homozygous chicken with a smooth white wattle. What is the genotype and phenotype of the chicks?
4.) A man and a woman have a child. The father is blood type A, and one of his parents was blood type A and the other was blood type O. The mother is blood type B, and one of her parents was blood type B, the other type O. Both the father and the mother are carriers of the Bombay allele. (Neither of the type-O grandparents were type O because of the Bombay allele – they had the regular type O genotype.) WhataretheoddsthattheirbabywillhavebloodtypeO? WhataretheoddsthattheirbabywillhavebloodtypeAB? (Hint – for this question, you should draw out a pedigree and fill in as much as you can for the genotypes of BOTH genes that are involved.)
1. How many different types of gametes can be produced by an individual with the genotype Yy Ww Pp ee Bb? 2. If an individual with the genotype Yy Ww Pp ee Bb is crossed with another individual with the same genotype, what proportion of offspring will be homozygous recessive at all genes? 3. If an individual with genotype Yy Ww Pp ee Bb is crossed with an individual with the same genotype, what proportion of offspring will have the dominant phenotype for the four heterozygous loci?
1. An albino man whose parents are both normal marries a woman one whose parents is normal and the other albino. She has an albino sister. The couple has a normal son. a. Is albinism a dominant or a recessive trait? Explain your answer. b.Give genotypes of all the persons involved. c. The couple plans to have more kids. What is the probability of their second child being normal?
3. Imagine you have just purchased a black stallion ofunknown genotype. You mate him to a red mare, andshe delivers twin foals, one red and one black. Canyou tell from these results how color is inherited, assuming that alternative alleles of a single gene are involved? What crosses could you do to determine howcolor is inherited?
1)If both parents are heterozygous, which genotypes are possible for their offspring? choose all that apply A)homozygous dominant B)heterozygous C)homozygous recessive D)more information would be needed
7. The ability to roll your tongue (R) is dominant to lack of this ability (r). A. What is the genotype of a man who can roll his tongue if his father couldn’t? B. If a man who is heterozygous for tongue rolling marries a woman who is heterozygous, what would you predict for the genotypes and phenotypes of their children?
1. Hereditary deafness in dalmations (d) is a recessive trait. What percentage of the progeny of crossing DD × Dd will be expected to be a carrier of the deafness allele, but not deaf? (enter a number only) 2.In snapdragons, a flowering plant, red (R) flower colour is dominant to white (r). The heterozygous condition results in pink flower colour. If a two pink flowered snapdragons are crossed, what is the resulting phenotype ratio? Select one: a.2:2 b.1:1:1:1 c.1:2:1 d.3:1 e. (all will be the same)
1. An albino man whose parents are both normal marries a woman ome of whose parents is normal and the other albino. She has an albino sister. The couple has a normal son. a.Is albinism a dominant or a recessive trait? Explain your answer B. Give genotypes of all the persons involved. C.The couple plans to have more kids. What is the probability of their second child being normal