Answer to Question #241764 in Genetics for Prince

Question

Ectrodactyly also know as" Lobster claw syndrome" is a recessive disorder in humans. If a phenotypically unaffected an affect offspring, what are the following probilities?

A. Both parents are heterozygotes

B. An offspring is a heterozygotes

C. The next three offspring will be phenotypically unaffected

D. Any two out of three offspring will be phenotypically unaffected.

Answer 1

Since ectrodactyly is a recessive trait in human, the probabilities would be distributed as follows;

(a) 1

(b) 1/2

(c) 3/4

(d) 1/2