Which of the following phenomena is a consequence of independent assortment? a. the phenotypic ratio among phenotypes produced from an f1 x f1 dihybrid cross is 9: 3: 3: 1. b. for any gene displaying complete dominance, heterozygous individuals exhibit the dominant phenotype. c. pure breeding plants, when mated with each other, produce completely homozygous offspring. d. smooth seed trait is dominant to wrinkled seed trait in peas.

Option A, The phenotypic ratio among phenotypes produced from an F1 X F1 dihybrid cross is 9:3:3:1.

Explanation:

Two characteristics which are associated with two different genes are expressed independently without interfering with the expression of one another as per the law of independent assortment

In other words

The two different alleles received from two different genes in a  gamete do not influence the expression of each other.

In option A, the cross is between dihybrid species where two allele of two different genes are expressed freely

For example

shape of seed of peas (S) and color of the seed of peas(C) are two different characteristics which are expressed independently in a dihybrid cross

Hence, option A is correct

answer; polycythemia is the correct answer;

hey, i believe your answer would be d. sugar ribose and the base uracil. i believe this is the answer, because rna consists of sugar ribose, adenine, guanine, cytosine, and uracil.

your first option is incorrect, because that's dna. where it consists of sugar deoxyribose, adenine, guanine, cytosine and thymine.

your second option is also incorrect, this is because sugar deoxyribose is in dna, and uracil is in rna. these two do not make sense together.

your third option being incorrect, because sugar ribose is in rna, but not the base of thymine. rna consists of uracil, not thymine.

lastly your fourth option being correct! this answer is correct, because both sugar ribose, and the base uracil are in rna! ~

answer is d. sugar ribose and the base uracil.