This problem will explore a concept called epistasis. Epistasis occurs when one set of alleles can mask the presence of a different set of alleles. In humans, normal pigmentation (A) dominates no pigmentation (albino = aa). Black hair (B) dominates blonde hair (b). An albino person will have white hair even though he or she may also have the alleles for black or blonde hair.An albino male who is homozygous for black hair marries a woman who is heterozygous for normal pigmentation and has blonde hair. What colors of hair can their children have, and what is the probability for each hair color?Two people with normal pigmentation have one child with dark hair, two children with light hair, and two albino children. What are the possible genotypes for the parents? If you are not certain about an individual’s allele, indicate this with a blank ( __ ).

Name: This problem will explore a concept called epistasis. Epistasis occur
Uploaded: 2024-03-20T06:43:04.000Z
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Description: This problem will explore a concept called epistasis. Epistasis occurs when one set of alleles can mask the presence of a different set of alleles. In humans, normal pigmentation (A) dominates no pigmentation (albino = aa). Black hair (B) dominates

The alleles for the traits are: Normal pigmentation- A albino - aa Black hair - B blonde hair - b Normal pigmentation is dominant over the albino and black hair is dominant over blonde hair. 1. Albino homozygous black haired male x heterozygous normal pigmentation blond haired female. aaBB x Aabb Punnett square Gametes Ab ab aB AaBb aaBb 50% will have normal pigmentation with black hair and 50% will be albino. 2. 2 children have light hair, 1 child have dark hair and 2 are albino. Here, assuming dark hair denoting black hair and light hair denoting blond hair. The possible genotypes: light hair- A_bb dark hair- A_B_ albino- aa__ As some children are albino and some have dark and light parents must be heterozygous for normal pigmentation and hair color. AaBb x AaBb Gametes AB Ab aB ab AB AABB (dark hair) AABb (dark hair) AaBB (dark hair) AaBb (dark hair) Ab AABb (dark hair) AAbb (light hair) AaBb (dark hair) Aabb (light hair) aB AaBB (dark hair) AaBb (dark hair) aaBB (albino) aaBb (albino) ab AaBb (dark hair) Aabb (light hair) aaBb (albino) aabb (albino)

Answered: This problem will explore a concept…

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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This problem will explore a concept called epistasis. Epistasis occurs when one set of alleles can mask the presence of a different set of alleles. In humans, normal pigmentation (A) dominates no pigmentation (albino = aa). Black hair (B) dominates blonde hair (b). An albino person will have white hair even though he or she may also have the alleles for black or blonde hair.

An albino male who is homozygous for black hair marries a woman who is heterozygous for normal pigmentation and has blonde hair. What colors of hair can their children have, and what is the probability for each hair color?
Two people with normal pigmentation have one child with dark hair, two children with light hair, and two albino children. What are the possible genotypes for the parents? If you are not certain about an individual’s allele, indicate this with a blank ( __ ).

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