Front

Which statement about genes is NOT true?

Back

All copies of every gene are always identical.

Front

What is the main factor responsible for the scientist's findings that tall parents usually have tall children, and short parents usually have short children?

Back

Heredity, because genes pass from one generation to the next

Front

A pea plant that produces green pods is crossed with a pea plant that produces yellow pods, and the offspring all produce green pods. Which of the following explains how this occurred?

Back

The characteristics of the pea plants' offspring are produced by the passage of genetic instructions from parents to offspring.

Front

People with sickle cell anemia

Back

inherited this gene from a previous generation.

Front

Two sisters are born from a father with blue eyes and a mother with brown eyes. One sister has blue eyes, and the other has brown eyes. What explains this difference in eye color?

Back

Each sister inherited a different combination of alleles from their parents that determined their eye color.

Front

Why were more pesticide-resistant insects present in the next generation?

Back

Because of heredity, insects with genes for pesticide resistance passed it on to the following generation.

Front

Why do children sometimes look more like one parent than the other?

Back

Children inherit a varied combination of genes from both parents.

Front

Why do polar bears, arctic hares, and arctic foxes have white fur?

Back

White fur helps animals survive in an arctic environment, so animals with white fur are more likely to pass on their genetic traits than other animals.

Front

Which statement best explains how a child grew up to have blond hair?

Back

The child inherited genes with instructions for blond hair from both parents.

Front

Which statement best describes the origin of inherited traits?

Back

An organism's inherited traits are determined by genetic material stored in the chromosomes, and they are passed from parent to offspring.