Genetics and Genetic Variation

What are genes made of?

• Chromosomes

• DNA

• More genes

There are multiple _________ on our chromosomes.

• genes

• nuclei

• cells

Tags

NGSS.HS-LS3-1

Chromosomes come in pairs. Each of your parents give you a chromosome for every pair. True or False?

• True

• False

Tags

NGSS.HS-LS3-1

The passing of traits from parent to child is known as _______________.

• heredity

• gene

• DNA

• RNA

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

This trait is represented by a lower case letter and hidden whenever the dominant allele is present

• dominant allele

• codominance

• recessive allele

• Punnett Square

This trait is represented by a capital letter and always shows up in an organism when the allele is present

• dominant allele

• codominance

• probability

• recessive allele

Which of the following is homozygous recessive?

• RR

• Rr

• rR

• rr

Which genotypes are heterozygous?

• EE

• tt

• Rr

• Both EE and tt

Which genotypes are homozygous dominant?

• EE

• tt

• Rr

• Both EE and tt

Which genotypes are homozygous?

• EE

• tt

• Rr

• Both EE and tt