Peppered moths are dark-colored when they carry the dark (D) allele, and light-colored when they are homozygous for the recessive (d) allele. A geneticist collected a population of 50 peppered moths, and found that 18 were dark (DD or Dd) and 32 were light (dd).

A drawing of the light form (dd) and the dark form (Dd or Dd) of the peppered moth is shown.

What are the allele frequencies for the alleles in this population? Assume that the conditions of Hardy-Weinberg equilibrium apply.

A. D = 0.20; d = 0.80
B. D = 0.50; d = 0.50
C. D = 0.25; d = 0.75
D. D = 0.36; d = 0.64

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.

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link:

not only is it colder, it also becomes darker, less salty, and more dense.