Chapter 14 Top Hat Questions- BIO 1113

Alternative versions of an individual gene are called ________.

alleles

In a cross between true-breeding purple- and white-flowered pea plants, the F1 progeny all have purple flowers if ________.

either parent donated the pollen

What percentage of the F2 progeny from a monohybrid cross will be true-breeding for the trait?

50

An allele of a gene that causes freckles is dominant over an allele for no freckles.  If you received the “freckles” allele from your mom and the “no freckles” allele from your dad, would you have freckles?

Yes

For which wizard can we predict the genotype at the earlobe gene? Recall that the allele for detached lobes is dominant.

Harry with attached lobes

Two parents each have attached earlobes. What is the expected trait for their child? Recall that the allele for detached lobes is dominant.

attached

Two parents each have detached earlobes. What is the expected trait for their child? Recall that the allele for detached lobes is dominant.

could go either way

An albino parent and a non-albino parent have 6 children, all of whom are non-albino. The allele for albinism is recessive. What is the genotype of the non-albino parent?

Can't say for certain

What type of gametes will be produced by a pea heterozygous at the loci for both flower color (Pp) and seed color (Yy)?

four gamete types: pY, py, PY, and Py

In a monohybrid cross between pea plants with alleles for both purple and white flowers, what is the probability that the first offspring will have purple flowers?

3/4

In a monohybrid cross between pea plants with alleles for both purple and white flowers, what is the probability that the 1st offspring will have purple flowers and the 2nd offspring will have white flowers?

3/16

In a monohybrid cross between pea plants with alleles for both purple and white flowers, what is the probability that the first two offspring will be one of each of type (purple and white flowers) in either order?

6/16