32.Quantitative variation usually indicates polygenic inheritance. What is a good example ofthis?33.Explain the potential influence of the environment on phenotypic expression and cite anexample.

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Description: 32.Quantitative variation usually indicates polygenic inheritance. What is a good example ofthis?33.Explain the potential influence of the environment on phenotypic expression and cite anexample.

32) Characters that vary in the population along a continuum are called quantative characters.…

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32. Quantitative variation usually indicates polygenic inheritance. What is a good example of this?

Biology: The Unity and Diversity of Life (MindTap Course List)

14th Edition

ISBN:9781305073951

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter13: Observing Patterns In Inherited Traits

Section: Chapter Questions

Problem 13SQ

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17. The differential expression of alleles depending on whether they are maternally or paternally derived. Group of answer choices 1. Genomic Imprinting 2. Dosage Compensation 3. Epigenetic Inheritance 4. Position Effect Varigation
26. The trait represented in the following pedigree is expressed only in the males of the family. Is the trait Y linked? Why or why not? If you believe that the trait is not Y linked, propose an alternative explanation for its inheritance. 1 2 II 3 6 II I 2 3 4 5 6 7 8 IV 1 2 Pierce, Genetics: A Conceptual Approach, 7e © 2020 W. H. Freeman and Company
20.TRC is a non mendelian trait. A.what is the mode of inheritance of total ridge count (TRC) in human? B. Give two factor that influence this TRC trait. C.if father has genotype of AaBbccdd and mother has a aaBbccDd .what is the genotype of the maximum and minimum TRC for their expected children?
15. The field of genetics that studies the mode of inheritance of complex or quantitative traits is called —————— genetics.
12. Which of the bar graphs shown below represents what the phenotypic frequencies might be for polygenic inheritance? Number of Individuals B Number of Phenotypes for Trait O Number of Individuals www Number of Phenotypes for Trait W O Number of Individuals Number of Phenotypes for Trait Number of Individuals *REQUIRED 1 Number of Phenotypes for Trait
33. Explain the potential influence of the environment on example. phenotypic expression and cite an
6. Identify the mode of inheritance for the following pedigree. Provide the genotypes of indicated individuals. ? Genotypes: Il-1 IV-1 V-6 Il-2 IV-2 V-12 Il-3 IV-3 V- 14 III-1 IV-4 V-16 III-13 V- 1 V-19
5 f There are two genes that determine the coat colour expression in dogs: eumelanin and merle. These genes are located on two separate chromosomes. For the eumelanin gene, black coat colour (E) is dominant over red coat colour (e). The merle gene controls the degree to which these coat colours are expressed through incomplete dominance. The following table describes the merle gene expression. Genotype MM Mm mm Phenotype White AAY Half colour (Grey or light red) Full colour (Black or Red) 1. If a dog breeder wants to determine the unknown genotype of a dog, what colour of dog must she use as a testcross? 2. A white dog was testcrossed, and all of the puppies had light red coats. What is the genotype of the white dog? Use a Punnett square to show your work. Hint - When a trait is controlled by two genes, an individual's genotype consists of 4 letters. = = = B I 123 ||| 14 E E I ос C GO * ●● ● ●0 00 00 00 ✓ C U up X₂ x²
4. In humans, cystic fibrosis and albinism are both inherited as independently assorting autosomal recessive traits. Use fto represent the recessive allele for cystic fibrosis and Ffor the allele for the unaffected condition. Use A to represent the dominant allele for normal melanin man is albino and heterozygous for cystic fibrosis. His wife has the unaffected phenotype for both traits, although her father had cystic fibrosis and a for the recessive allele for albinism. and her mother is albino. 4a. What is the genotype of the wife? 4b. What is the probability that a child of this couple is albino and has cystic fibrosis?
1. In dogs, brown or black coat color is determined by a single autosomal gene with brown (b) being recessive to black (B). A separate gene called extension with alleles e and E also influences color. ee is epistatic black and brown. Dogs that are homozygous for the extension (e) allele have yellow coat color regardless of other genes. The presence of a single E allele allows black or brown to be expressed. Trixie, dog with yellow coat color, is mated to Mansfield, a dog with black coat color, and the puppies are produced in the following ratios: ½ yellow 14 black 1/4 brown What were the genotypes of Trixie and Mansfeild?
17. In rats, the following genotypes of two independently assorting autosomal genes determine coat color.A_B_ (gray)A_bb (yellow)aaB_ (black)aabb (cream)A third gene pair on a separate autosome determines whether or not any color will be produced.The CC and Cc genotypes allow color according to the expression of the A and B alleles.However, the cc genotype results in albino rats regardless of the A and B alleles present. Given the inheritance pattern of coat color in rats described in Problem 17, predict the genotype and phenotype of the parents who produced the following offspring: (c) 27/64 gray: 16/64 albino: 9/64 yellow: 9/64 black: 3/64 cream
A heterozygous individual has a _______ for a trait being studied. a. pair of identical alleles b. pair of nonidentical alleles c. haploid condition, in genetic terms