Huntington’s disease is an autosomal dominant condition where defective proteins kill brain cells. A man with Huntington’s whose mother did not have it has a son with a woman who also does not have it. What is the chance the son will have Huntington’s?

DNA wraps around _______________ proteins to compact it to a 30 nm thickness, which fits inside the nucleus.

A recessive allele is one:

Matt is normally pigmented but has an albino son.  Matt is ____________ for this trait.

After mitotic cell division, if a parent cell has 8 chromosomes, each daughter cell will have ______chromosomes.

This autosomal recessive condition is caused by a defective enzyme that produces the pigment melanin.

In snakes, the albino condition is recessive to normal pigmentation.  An albino female snake mates with a normally pigmented male snake. Their offspring are: 3  normally pigmented: 1 albino   What is the genotype of the male parent snake?

In pea plants, inflated pod is dominant to wrinkled pod.  A homozygous inflated pea plant is crossed with a wrinkled pea seed plant. What would be the expected phenotypic ratio of the F2 generation?

A pure-breeding red flower plant is crossed with a pure-breeding white flower plant. All of the offspring have pink flowers. If two pink flowered plants are crossed with one another, what results would appear?

Pluripotent stem cells change their gene expression pattern become other  more specialized cells.  These new cells have become: