Mendel's Genetics and Laws

Front

What did Mendel conclude about traits?

Back

Each trait is controlled by two factors.

Front

What are the two factors that control each trait called?

Back

Dominant and recessive factors.

Front

What happens when both factors are present in an individual?

Back

Only the dominant factor is expressed.

Front

What term did Mendel use to describe the factor that dominates?

Back

Dominant.

Front

What term did Mendel use to describe the other factor?

Back

Recessive.

Front

Why does one form of a trait disappear in the F1 plants?

Back

Because only the dominant factor shows up.

Front

What happens to the two factors when F1 plants reproduce?

Back

The two factors separate and go to different gametes.

Front

What is Mendel's first law?

Back

The law of segregation.

Front

What does the law of segregation explain?

Back

Why both forms of the trait show up again in the F2 plants.

Front

What is the probability of an F2 plant inheriting two recessive factors for a trait?

Back

One out of four F2 plants inherits two recessive factors.