Really confusing biology questions involving genetics?

Posted on 2015-10-29 07:43:00 in Biology by BIOLOGY QUESTIONS INVOLVING GENETICS

1.) How many unique gametes could be produced from an individual with the genotype AABbCcDdeeFf?

2.) Cystic fibrosis is the most common inherited disorder of individuals of European descent. It is a recessive autosomal disorder. Consider that two individuals already had one child afflicted with cystic fibrosis. What is the probability that their next 2 children will not have this disorder?

a.) 9/16 b.) 1/2 c.) 3/8 d.) 1 e.) 3/4
f.)3/16 g.)1/4

3.) Dimples is an inherited dominant trait in humans. Suppose that one parent is heterozygous for dimples and the other parent does not have dimples.

What is the probability that their child will be a girl and have dimples?

a.) 0 b.) 1/2 c.) 1/4 d.) 3/4 e.) 1/8 f.) 3/8

4.) Consider this cross: AaBBCcDdEeff x aaBbCcDdeeFf

What is the probability of an offspring having the dominant phenotype for all 6 genes?

a.) 9/16 b.) 1/6 c.) 9/128 d.)3/32 e.) 3/4 f.) 9/64

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