The phenotypes and genotypes that result from a cross of Aa and aa (A = normal pigmentation and a = albinism) are
A. phenotypes:all albino; genotypes:50% heterozygous and 50% homozygous recessive.
B. phenotypes:all normal; genotypes:50% heterozygous and 50% homozygous recessive.
C. phenotypes:all albino; genotypes:all homozygous recessive.
D. phenotypes:50% normal and 50% albino; genotypes:50% heterozygous and 50% homozygous recessive.
Answer: D
You might also like to view...
The sinus tarsi are between the ____________________ and ____________________ bones, as seen on sectional images.
Fill in the blank(s) with the appropriate word(s).
The humeroulnar, humeroradial, and proximal radioulnar joints are the three articulations present at which joint?
A. wrist B. elbow C. shoulder D. none of the above
Red marrow not only produces RBCs, but also is the ultimate source for __________ and __________
Fill in the blank(s) with correct word
Ninety percent of the cells within the CNS are neurons
Indicate whether the statement is true or false