GENETICS Compulsive channel switching (i.e. channel surfing) is found to be caus

Question

GENETICS

Compulsive channel switching (i.e. channel surfing) is found to be caused by a recessive (but highly prevalent) gene on the X chromosome (cs). Also located on the X chromosome are two other recessive genes - one that causes an addiction to watching football on TV (fba), and one that causes excessive burping in public (bp). The location of these genes on the X chromosome are 25 (cs/ cs+), 43 (fba/fba+) and 76 (bp/bp+) map units. The level of interference over this linkage group (i.e. the Coefficient of Interference) is 0.15. A normal female has the genotype cs+fba bp+ / cs fba+bp. What is the probability that she will produce a gamete that contains all three recessive alleles?

A) 0.025

B) 0.0594

C) 0.15

D) 0.51

E) 0.85

Explanation / Answer

the correct answer is B

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