13. Mendelian Genetics
Autosomal Inheritance
Multiple Choice
Multiple ChoiceCystic fibrosis, which is usually lethal before the age of reproduction, is a homozygous recessive trait. Why do cases continue to arise, even though people with the disease rarely live to reproduce?
A
New mutations continually introduce this harmful condition into the population.
B
Mosquitoes can transfer the disease from person to person.
C
People continue to make inappropriate lifestyle choices.
D
None of the listed responses is correct.
E
The harmful allele "hides" within heterozygous individuals, and one-fourth of the offspring of two heterozygotes would be afflicted.
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