Practice Test

Question 1

Which trait is Lisa least likely to inherit from her mother?

Revolt · Accepted Answer

A: pink hair

Question 2

Which represents the cross between parent plants if one is heterozygous and has yellow-colored pods and the other is homozygous and has green-colored pods?

Revolt · Accepted Answer

A: Yy times yy

Question 3

Which are different forms of the same gene?

Revolt · Accepted Answer

B: alleles

Question 4

A cross is performed between a bird that is homozygous for red feathers and a bird that is homozygous for blue feathers. Purple offspring result due to incomplete dominance. Then, two of the purple offspring are crossed. What proportion of the offspring from the second cross will be purple?

Revolt · Accepted Answer

B: 2 in 4

Question 5

Which scenario breaks the law of segregation?

Revolt · Accepted Answer

D: a gamete produced has 2 of the same alleles after meiosis II

Question 6

Joyce and Tim started piano lessons at the same time. They both practice about 30 minutes a day and enjoy playing the piano. Despite these similarities, Joyce has mastered many more piano skills than Tim has. Which argument is best supported by these observations?

Revolt · Accepted Answer

C: The ability to play the piano is influenced by genetics as well as the environment.

Question 7

Some flowering plants appear to have offspring that have traits that are intermediate between those of the parents. Which type of dominance is exhibited by the offspring?

Revolt · Accepted Answer

B: incomplete dominance

Question 8

The Punnett square predicts the ratio of genotypes in the offspring based on the genotypes of the parents. Which Punnett square represents a cross between a mom who is heterozygous for dimples and a dad who is homozygous for no dimples?

Revolt · Accepted Answer

A: Image with description A Punnett square is shown. The columns are labeled Upper D and d. The rows are labeled d and d. Clockwise from upper left the boxes contain: Upper D d, d d, d d, Upper D d.

Question 9

If Mendel had crossed a true breeding dominant plant with a true breeding recessive plant, in which of the three generations is the recessive trait visible?

Revolt · Accepted Answer

B: cap p  generation and  cap f sub 2  generation

Question 10

Mendel’s pea plants had either purple or white flowers. This means that the plants

Revolt · Accepted Answer

D: have two alleles for the gene.

Practice Test Answers

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