WorksheetsBiology - Punnett Squares
Total questions: 24
Worksheet time: 2hrs 0mins
Short = S
Short = t
Short = T
Short = tt
The different forms of a gene
alleles
atoms
proteins
wheels
Bb + bb
Which of the following is/are considered to be purebreds? Select all that apply.
AA
bb
Dd
ee
In pea plants, tall is dominant to short. If 2 heterozygous plants are crossed, what % of the offspring will be short?
0%
25%
50%
75%
In some plants, red and white are incompletely dominant. An offspring of a red flower and a white flower would be
red
white
red and white
pink
In cows, red and white hair is codominant. If you cross a red cow and a white cow, the offspring would be...
red
white
red and white
pink
Based on this Punnett Square, which answer correctly describes the offspring?
3/4 are tall and purple
All are tall and purple
3/4 are short and white
All are short and white
Based on this Punnett Square, what is the chance of getting a female with white eyes?
0%
25%
50%
100%
In pea plants tall stems(T) are dominant over short stems(t) and round seeds(R) are dominant over wrinkled seeds(r). Consider the following cross: TtRr X Ttrr
Next 4 questions will be about this information. Please take notes.
a. Find the number of possible phenotypes
2
4
6
8
b. Find the number of possible genotypes
2
4
6
9
c. What is the chance of having tall, wrinkled seeded plants?
1/4
1/8
3/4
3/8
d. what is the chance of plant to have homozygous recessive genotype?
1/2
1/4
1/8
3/8
(Grey fur (G) is dominant over white fur (g) and Black eyes (B) are dominant over red eyes(b))
A male rabbit GGbb crossed with a female rabbit with ggBb.
Next 3 questions will be about this information.
a. how many out of 16, have grey fur and black eyes?
4
8
12
16
b. how many out of 16, have grey fur and red eyes?
4
8
12
16
c. how many out of 16, have white fur and black eyes?
0
4
8
16
