Question 1

Which of these best explains the meaning of genotype?

Accepted Answer

An organism's genetic makeup represented with letter.

Answer

An organism's physical appearance shown in a trait like brown eyes.

Answer

An organism's physical appearance represented with letters.

Answer

An organism's genetic makeup shown with a trait like brown eyes.

Question 2

Which of these best explains the meaning of phenotype?

Accepted Answer

An organism's physical appearance shown in a trait like brown eyes.

Answer

An organism's genetic  makeup represented with letters.

Answer

An organism's genetic makeup shown with a trait like brown eyes.

Answer

An organism's physical appearance represented with letters.

Question 3

Which of these correctly shows a cross with two parents that are both heterozygous?

Accepted Answer

Hh x Hh

Answer

hh x HH

Answer

HH x Hh

Answer

Hh x hh

Question 4

Which of these correctly shows a cross where one parent is homozygous dominant and the other parent is recessive?

Accepted Answer

HH x hh

Answer

Hh x hh

Answer

hh x Hh

Answer

HH x HH

Question 5

Which of the following crosses resulted in these offspring shown in the Punnett square?

Accepted Answer

FF x ff

Answer

Ff x Ff

Answer

FF x Ff

Answer

ff x Ff

Question 6

Which of the following offspring correctly replaces the ? in the Punnett square above?

Accepted Answer

aa

Answer

AA

Answer

aA

Answer

Aa

Question 7

What is the correct phenotypic ratio for a cross of two plants that are heterozygous for tall (short is recessive)?

Accepted Answer

3 Tall: 1 Short

Answer

All Tall

Answer

3  TT: 1 tt

Answer

1TT: 2Tt: 1tt

Question 8

What is the expected ratio of a dihybrid cross when both parents are heterozygous?

Accepted Answer

9:3:3:1

Answer

4:4:4:4

Answer

8:8:0:0

Answer

16:0:0:0

Question 9

What are all the possible allele combinations for Rryy?

Accepted Answer

Ry, ry

Answer

RY. Ry, rY, ry

Answer

Rr, yy

Question 10

Based on the key pictured, what is the phenotype of a seed that is homozygous dominant for shape and heterozygous for color?

Accepted Answer

Round and yellow

Answer

RRYy

Answer

rrYy

Answer

Round and Green

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