What are trinucleotide repeat expansions?

a. a mutation that creates malformed bases
b. repair enzymes that correct nucleotide loops
c. mutations that cause codon duplications
d. mutations that cause DNA triple helixes


c. mutations that cause codon duplications

Biology & Microbiology

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What are the odds that a 35 year old woman will give birth to a child with a chromosomal abnormality?

a. 1/1,000 b. 1/80 c. 1/50 d. 1/500 e. 1/20

Biology & Microbiology

When genes are located very close together on the same chromosome, ____

a. gametes usually end up with the same combination of alleles as parental cells b. gametes usually end up with unique combination of alleles c. they are inherited separately d. they often recombine during crossing over e. offspring will look just like one parent

Biology & Microbiology

Beneficial bacteria that synthesize vitamin K and some of the B vitamins are an important part of our digestion. The part of the digestive system where these bacteria are found is the ________

Fill in the blank(s) with correct word

Biology & Microbiology

Fatty acids are

A) composed of carbon, hydrogen, and oxygen in a 1:2:1 ratio. B) composed of carbon, hydrogen, glycerol, and a phosphate group. C) composed of hydrocarbon chains and a carboxyl group. D) composed of four linked rings.

Biology & Microbiology