MasteringBiology Week 5 Genetics Lab Room Assignment E2 Inhe

MasteringBiology Week 5: Genetics Lab Room Assignment E2: Inheritance of colorblindness-Google Chrome Secure https:// Foundations in Biology & Chemistry w/ Lab Week 5: Genetics Lab Room A VIrtual Genetics Lab: The Inheritance of Color Blindness Submit My Answers Give Up Part H Think it over Explain why color blindness occurs more commonly in males than females. Essay answers are limited to about 500 words (3800 characters maximum, including spaces) 3800 Character(s) remaining Submit My Answers Give Part I Think it over Based on your Punnett squares, determine whether a son can inherit color blindness from his father. Explain your reasoning. Essay answers are limited to about 500 words (3800 characters maximum, including spaces. 3800 Character(s) remaining Submit My Answers Give Up edbi Continue

Solution

Part H.

Color blindness is an X-Linked Recessive Inheritance, two copies of a disease allele on the X chromosome are required for an individual with two X chromosomes (a female) to be affected with an X-linked recessive disease.

Since males are hemizygous for X-linked genes (they have only one X chromosome), any male with one copy of an X-linked recessive disease allele is affected. Women are affected when they have two copies of the disease allele. This is the reason why this disease is more common in males than females.

Part I

Affected fathers transmit the disease allele to all of their daughters, who are then carriers, but to none of their sons.