Answers:
a.) draw the pedigree as far as described?
Pedigree:
C/– c/c
C/c C/–
?
b.) If the frequency in the population of heterozygotes for cystic fibrosis is 1 in 50, what is the chance the couples first child will have cystic fibrosis?
Man: has the disease
Wife: 1/50 chance to have the c allele
First child: 1.0 x 1/50 x 1/4 = 1/200 = 0.005
c.) If the first child does have cystic fibrosis, what is the probability that the second child will be normal?
If the first child has the disease, then the mother is a carrier of the
c allele. In consequence, the probability is 3/4
The correct answer is option D, that is, redwood tree forests.
Gymnosperms are seed-bearing vascular plants, in which the seeds or ovules are not enveloped in an ovary. In gymnosperms, the pollen is the male reproductive part, and the cone is the female reproductive part. It includes cycads, conifers, and ginkgo.
The redwood trees are examples of gymnosperms and play an essential role in sustaining the equilibrium of carbon dioxide in the atmosphere, like green plants.
Any animal with four feet. Such as alligators, crocodiles, cows, donkeys, cats...