Complementary Base Pairing

question 1

Multiple Choice

Complementary base pairing

• A) does not take place in RNA.
• B) takes place between two purine bases.
• C) takes place between purine and pyrimidine bases.
• D) results in the formation of the double helix of RNA.
• E) takes place between the bases and the phosphates in the backbone of the chain.

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Definitions:

X Chromosomes

are one of the two types of sex chromosomes, present in two copies in females and one in males, carrying genes important for sexual development and other functions.

X-Linked

Gene located on an X chromosome.

Incomplete Dominance

A genetic phenomenon where the phenotype of a heterozygote is intermediate between the phenotypes of the two homozygotes, indicating a blend of the parental traits.

Dominant Allele

An allele that expresses its phenotypic effect even when heterozygous with a recessive allele, masking the effect of the recessive allele in heterozygotes.