Genetics Review

Front

What are the two different forms of a gene called?

Back

Alleles

Front

What is the process of breeding plants or animals for specific traits called?

Back

Selective breeding

Front

Which of the following is NOT an example of how environmental factors may influence animals?

Back

Eye color may change due to injuries.

Tags

NGSS.HS-LS4-4

Front

In a genetic cross, if yellow is dominant and green is recessive, what is the phenotype of an organism with two recessive alleles?

Back

Green

Front

To breed a cow that produces a lot of milk, what type of cow should a farmer breed?

Back

A cow who produces a lot of milk and a bull whose mother produced a lot of milk.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Front

What is the difference between genotype and phenotype?

Back

Genotype refers to the genetic makeup of an organism, while phenotype refers to the observable traits.

Front

What is the principle of segregation in genetics?

Back

The principle that during the formation of gametes, the two alleles for a trait separate from each other.

Front

What does it mean for an allele to be dominant?

Back

A dominant allele is one that expresses its trait even when only one copy is present.

Front

What is a recessive allele?

Back

A recessive allele is one that only expresses its trait when two copies are present.

Front

What is the purpose of a Punnett square in genetics?

Back

A Punnett square is used to predict the genotypes and phenotypes of offspring from a genetic cross.