Inheritance and Genetic Variation Review

The basic unit of heredity; controls a specific trait

• Variation

• Inherited trait

• Gene

• Chromosome

• Allele

Long strands of DNA that contain lots of genes

• Variation

• Inherited trait

• Gene

• Chromosome

• Allele

Different versions of a gene

• Variation

• Inherited trait

• Gene

• Chromosome

• Allele

A characteristic passed from parent to offspring

• Variation

• Inherited trait

• Gene

• Chromosome

• Allele

The differences that occur from a mixture of genes

• Variation

• Inherited trait

• Gene

• Chromosome

• Allele

The offspring of asexually reproducing organisms have genes that are _______________ to that of their parent.

• identical

• different

• half

• varied

The offspring of sexually reproducing organisms have genes that are _______________ from that of their parents.

• different

• identical

• dominant

• unchanged

Humans inherit traits from their ____________________.

• parents

• siblings

• uncles/aunts

• identical

In sexually reproducing organisms, each parent contributes ____________ of the genes acquired by the offspring.

• half

• all

• one-third

• a quarter

Two children born to the same parents have many similarities, but overall, they have different appearances. How is this possible?

• They inherit different combinations of genes from their parents.

• They are exposed to different environmental factors.

• One parent has more dominant genes then the other parent

• Offspring inherit an allele for every trait from each parent