Mastering Punnett Squares for Genetic Predictions

Mastering Punnett Squares for Genetic Predictions

Assessment

Interactive Video

Biology, Science, Mathematics

9th - 10th Grade

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial introduces the basics of Punnett squares, which are used to measure the probability of genetic outcomes based on specific genetic crosses. It explains that Punnett squares do not predict exact outcomes but rather possibilities. The tutorial provides examples of genetic crosses, including eye color, using Punnett squares to illustrate genotype and phenotype probabilities. It covers both simple and heterozygous crosses, explaining the resulting genotype and phenotype ratios. The video concludes with a note on more complex genetic crosses to be covered in future videos.

Read more

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary purpose of a Punnett square?

To calculate the age of a gene

To measure the probability of genetic outcomes

To identify the dominant gene in a cross

To determine the exact genetic outcome of offspring

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a simple Punnett square, what do the letters represent?

Different chromosomes

Different alleles

Different genes

Different species

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the dominant eye color in the example provided?

Blue

Hazel

Green

Brown

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If a mother has green eyes (Big G little G) and a father has blue eyes (little G little G), what is the probability of their child having blue eyes?

25%

50%

100%

75%

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a Punnett square, what does each quadrant represent?

A 100% chance of a phenotype

A 75% chance of a phenotype

A 25% chance of a genotype

A 50% chance of a genotype

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a possible genotype for offspring from a Big G little G and little G little G cross?

Big G Big G

little G little G

Big G little G

little G Big G

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the genotype ratio for a cross between two heterozygous individuals (Big G little G)?

2:2

1:1

1:2:1

3:1

Create a free account and access millions of resources

Create resources
Host any resource
Get auto-graded reports
or continue with
Microsoft
Apple
Others
By signing up, you agree to our Terms of Service & Privacy Policy
Already have an account?