Non-Mendelian Inheritance

Question 1

Why are women often carriers of X-linked traits but rarely affected by them?

Revolt · Accepted Answer

Women have two X chromosomes, so a recessive allele on one X chromosome is often masked by a dominant allele on the other X chromosome. Women are usually affected only if they inherit two recessive alleles.

Question 2

The pedigree on the right shows the inheritance pattern for an X-linked recessive disorder.If the female circled in pink married an affected male and had a female child, what is the chance that the child would also be affected? Express your answer in a percentage.%What is the chance that the child would be a carrier? ⇒ 50% True or false? The child could be standard.

Revolt · Accepted Answer

Part 1: 50

Question 3

True or false? The child could be standard.

Revolt · Accepted Answer

false

Non-Mendelian Inheritance Answers

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