enetics: A geneticist is studying two genes. Each gene can be either dominant or recessive. A sample of

100

individuals is categorized as follows. Write your answer as a fraction or a decimal, rounded to four decimal places.

Gene 2
Dominant	Recessive
Gene 1	Dominant	55	25
Recessive	14	6

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(a) What is the probability that in a randomly sampled individual, gene

1

is dominant?

(b) What is the probability that in a randomly sampled individual, gene

2

is dominant?

(c) Given that gene

1

is dominant, what is the probability that gene

2

is dominant?

(d) Two genes are said to be in linkage equilibrium if the event that gene

1

is dominant is independent of the event that gene

2

is dominant. Are these genes in linkage equilibrium?