Sickle cell anemia is a disease caused by a recessive allele. what is the chance a child will be a carrier for sickle cell if one parent has it, and the other parent does not, and is homozygous.
a. 50%
b. 100%
c. 75%
d. 25%

A

Explanation:

For a child to be a carrier, one parent must be homozygous dominant and other one must be heterozygous. So that the cross results should show results for two homozygous dominant offspring and two heterozygous offspring

phylogenetic tree is the tree of life or evolution tree. it shows the different branches of evolution. the sequence goes like tissues - coelom - backbone - endoskeleton - segmentation