Year End Science Review

Front

What is selective breeding?

Back

Selective breeding is the process of choosing specific animals or plants with desirable traits to reproduce, aiming to enhance those traits in future generations.

Front

How can selective breeding increase milk production in cows?

Back

By choosing cows that are high milk producers to breed, farmers can increase the overall milk production in their herd.

Front

What is heredity?

Back

Heredity is the passing of genetic instructions from one generation to the next, determining traits such as height, skin color, and dimples.

Front

Which trait is not inherited genetically in humans?

Back

Spoken language is not a genetic trait; it is learned.

Front

What is a hydra bud?

Back

A hydra bud is a small outgrowth from an adult hydra that is genetically identical to the parent hydra.

Front

What is asexual reproduction?

Back

Asexual reproduction is a mode of reproduction where an organism can reproduce without the involvement of gametes, resulting in offspring that are genetically identical to the parent.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is an example of a physical change during mechanical digestion?

Back

Teeth crushing and grinding food into smaller fragments is an example of a physical change.

Front

What does it mean to be homozygous for a trait?

Back

Being homozygous for a trait means having two identical alleles for that trait, either both dominant or both recessive.

Front

What does it mean to be heterozygous for a trait?

Back

Being heterozygous for a trait means having two different alleles for that trait, one dominant and one recessive.