If You Compared the DNA Sequence of a Gene with the Sequence

question 23

Multiple Choice

If you compared the DNA sequence of a gene with the sequence of the mature mRNA that was transcribed from the gene you would find:

• A)The mRNA is shorter because it does not contain exons
• B)Both are the same length
• C)The mRNA is shorter because it does not contain introns
• D)The mRNA is shorter because each codon of three bases encodes only one amino acid
• E)The mRNA is longer because each codon of one amino acid encodes three bases

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Definitions:

Polygenetic Effects

The influence on a trait that results from the interaction of many different genes.

Dominant Gene Pair

is two alleles of a gene where both are dominant, leading to the dominant trait being expressed in the organism.

Recessive Gene Pair

Two copies of a gene on a chromosome that must both be present for a recessive trait to be expressed.

Extra Chromosome

An abnormal condition where an individual has more than the usual number of chromosomes, leading to genetic disorders.