All the offspring of a cross between a black-eyed mendelien and an orange-eyed mendelien have black eyes. this means that the allele for black eyes is the allele for orange eyes.

Dominant over

Explanation:

Dominant genes will show up physically.( appear as phenotype) The baby has black eyes so we know it must have a genotype with a dominant allele. But, because orange eyes are less dominant than black we know that orange eyes is a recessive trait and the baby must have at least one allele of orange.

the man is bald so he has no hair to get wet

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.