Dominant allele:
Dominant trait:
recessive allele:
recessive trait:
The probability (% chance) that the offspring will have cloven hooves if both parents are heterozygous is
Which statement best describes what will MOST LIKELY happen to the cattle population on the farm over time?
Which evidence supports your answer for Part A?
Cystic fibrosis is an autosomal recessive disorder that impacts the ability of the lungs to remove mucus. The figure shows a family affected by Cystic fibrosis.

What is the probability that Child 1 will have Cystic fibrosis?
Both parents are heterozygous.
What are the parent's alleles?
Set up the cross when both parents are heterozygous.
