Fall Final Review

Front

What fraction of the cross to the right will be homozygous recessive for both traits?

Back

1/16

Front

Crossing-over, which occurs during prophase I, leads to ___?

Back

genetic diversity

Front

What type of mutation has occurred in the diagram above?

Back

frameshift mutation

Front

As DNA unzips to be copied, what type of bond must be broken?

Back

hydrogen bond

Front

A man heterozygous for blood type A marries a woman heterozygous for blood type B. The chance that their first child will have type O blood is _____?

Back

25%

Front

Define homozygous recessive.

Back

An organism with two identical recessive alleles for a trait.

Front

What is crossing-over in genetics?

Back

The exchange of genetic material between homologous chromosomes during prophase I of meiosis.

Front

What is a frameshift mutation?

Back

A mutation caused by the insertion or deletion of nucleotides that shifts the reading frame of the genetic code.

Front

What are hydrogen bonds?

Back

Weak bonds that hold the two strands of DNA together between complementary bases.

Front

What is the probability of a child having type O blood from a heterozygous A and heterozygous B parent?

Back

25%.