Study Guide For Science Test

What is the passing of traits from parent to offspring?

• pollination

• heredity

• pure breeding

• cell fusion

Which of the following is an example of a trait?

• your hair length

• your hair style

• naturally curly hair

• color-dyed hair

John has a genotype of EE for earlobe shape. What is another way to describe this genotype?

• hybrid

• heterozygous

• homozygous dominant

• homozygous recessive

What happens to a recessive allele (e) when a dominant allele (E) is present? (assume complete dominance)

• neither trait will show

• the recessive trait will show

• the recessive trait will not show

• both the recessive and dominant traits will show

Genes contain information for each of your traits. Where are genes located?

• mitochondria

• alleles

• genotype

• chromosomes

In cats, there are two types of ears: normal and curly. A curly-eared cat mated with a normal-eared cat and all of the kittens had curly ears. What type of trait are curly ears?

• dominant

• recessive

• co-dominant

• incomplete dominant

Jack and Jill were brother and sister, but didn't look alike at all. Jack had attached earlobes (recessive) and Jill had free earlobes (dominant). Jill knew one parent was pure recessive for earlobe shape and the other was heterozygous, so she drew the following Punnett square:

In the Punnett square, the two letters Ee are an example of what?

• DNA

• a trait

• a genotype

• a phenotye

Jack and Jill were brother and sister, but didn't look alike at all. Jack had attached earlobes (recessive) and Jill had free earlobes (dominant). Jill knew one parent was pure recessive for earlobe shape and the other was heterozygous, so she drew the following Punnett square:

What type(s) of earlobes do Jill's parents have?

• Both parents have free earlobes.

• Both parents have attached earlobes.

• One parent has attached earlobes and one parent has free earlobes.

• Not enough information is given.

Jack and Jill were brother and sister, but didn't look alike at all. Jack had attached earlobes (recessive) and Jill had free earlobes (dominant). Jill knew one parent was pure recessive for earlobe shape and the other was heterozygous, so she drew the following Punnett square:

What is the probability of offspring with attached earlobes like Jack?

• 25%

• 50%

• 75%

• 100%

Jack and Jill were brother and sister, but didn't look alike at all. Jack had attached earlobes (recessive) and Jill had free earlobes (dominant). Jill knew one parent was pure recessive for earlobe shape and the other was heterozygous, so she drew the following Punnett square:

Jack's earlobes were different than Jill's. Which of these answers explains how this happened?

• Jack got one recessive gene from each parent.

• Jack got one dominant gene from each parent.

• Jack got one dominant gene from one parent and one recessive gene from the other parent.

• Jack didn't inherit his earlobe shape from his parents. He got his earlobes from his grandma.