<span>B. the complementarity of DNA and RNA
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Answer: is accomplished by DNA polymerase.
Explanation: DNA polymerase is an enzyme that catalyzes the synthesis of a complementary strand of a DNA molecule during replication. The double stranded DNA helix is first unwind by the enzyme known as helicase giving rise to two DNA strands which serve as templates for replication. DNA polymerase then binds to a primer, a short nucleotide sequence and catalyzes the attachment of nucleotides to the primer to form a growing strand that is complementary to the parent DNA.
Answer:
The phenotype ratio predicted for dihybrid cross is 9:3:3:1.
Explanation:
A dihybrid cross tracks two traits. Both parents are heterozygous, and one allele for each trait exhibits complete dominance *. This means that both parents have recessive alleles, but exhibit the dominant phenotype. (Sorry if i Misspelled some words)
The sun evaporates the water from ponds, oceans...etc. There the water turns into water vapor, a gas. Then it participates from the cloud and restarts all over again.
Four conditions are needed for natural selection to occur: reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population. If they are met, natural selection automatically results.
