Science Notebook - Student Edition

Main Idea Details

134 Genetics and Biotechnology

Test Cross

I found this information

on page.

Analyze the use of a test cross to determine the genotype of a

yellow flower by completing the prompts. The first one has been

done for you.

The genotype of the white flower: yy

Possible genotypes of the yellow flower:

Possible

Phenotypes

Possible

Genotypes

offspring if the

yellow flower is

heterozygous

offspring if the

yellow flower is

homozygous

Create a Punnett Square that shows the result of each test cross.

Summarize how test crosses work by using the words genotype

and phenotype to complete the sentence.

In a test cross, the of the offspring can reveal

the of the parents.

Section 13.1 Applied Genetics (continued)

Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.

Selective breeding practices have been used since ancient times.

Provide specific examples where selective breeding has resulted in plants or animals

that are familiar to us today.

(^) CONNECT
Heterozygous: Homozygous: