Lab: Heredity and Punnett Squares — Unit test Answers

Which timeline shows the correct order of contributions made to the discovery of DNA?

The Punnett square shows the results when two parent dogs are crossed. L represents the allele for a long tail, and l represents the allele for a short tail.

Brown eye color is a dominant trait and blue eye color is a recessive trait.What typically happens when someone inherits one allele for brown eyes and one for blue eyes?

cell nucleusribosomeamino acidprotein

In a population of lizards, some have tails that are all red (RR), and some have tails that are all blue (BB). The offspring of a red-tailed lizard and a blue-tailed lizard have tails that are both red and blue.What type of inheritance does this demonstrate?

Danielle has blonde hair. Her mother has blonde hair and her father has brown hair.Which explains how Danielle inherited her hair color?

sugaramino acidlipidfat

Having freckles is dominant over not having freckles, and curly hair is dominant over straight hair. One parent is homozygous for freckles and has straight hair. The other parent does not have freckles and has straight hair.

A scientist has a tomato plant with red-skinned tomatoes. It has one allele for red skin (R) and one for yellow skin (r).Which describes the phenotype of the tomato plant?

A cleft chin is a dominant trait. One parent is heterozygous for cleft chin, and the other parent does not have a cleft chin.

One coiled spring is shown in the diagram.

Xavier used a chart to list the roles of two different molecules in protein production. Which headings best complete the chart?

Which statements describe incomplete dominance? Choose three answers.Traits are usually dominant.Traits are neither dominant nor recessive.Offspring exhibit an intermediate form of alleles from the parents.Both alleles, one from each parent, are expressed in offspring.Incomplete dominance involves the interaction of two alleles.

Which is the best example of a neutral mutation?

Which allele for human blood type is recessive?