Your answer would be A. Uracil
<span>If the parents are both heterozygous for </span><span>particular traits their genotype would be: AaBb x AaBb ( this cross would be the F1 generation while the P generation is the one that originated the parents).
This cross would result in the folowing genotypes:
AABB
AaBB
Aabb
aaBB
aaBb
aabb
Dominant for A and B: 9/16
Dominant for A but recessive for B: 3/16
Recessive for A but dominant for B: 3/16
Recessive for A and B: 1/16
ratio: 9:3:3:1
To answer you the possible phenotypes is difficult because your question is missing information about what each gene does, but I know it would be 4 different phenotypes.
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Lincoln worked as a boatman, store clerk, surveyor, militia soldier, and became a lawyer in Illinois. He was elected to the Illinois Legislature in 1834, and was reelected in 1836, 1838, 1840, and 1844.
The species of plankton found in sediments and their isotope ratios can show the temperature of the overlying waters when the sediments were deposited.