Genetics and Heredity

DNA is the basic building block of

• a tower

• planet earth

• all living organisms

• humans

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What is a trait?

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Homozygous means

• One allele from father, and one from mother

• two alleles from one parent

• two identical alleles of a gene

Hereditary means

• traits are passed down to offspring

• traits are shared with neighbors

• traits are transferred from offspring to parents

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What does genotype mean?

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What is a recessive trait?

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A chromosome is a thread-like structure found in the cell nucleus.

• True

• False

A trait is dominant if

• the person has two copies of the gene

• If the person has one copy of the gene

Heterozygous means

• having two different genes

• having two different alleles of the same gene

• having two alleles from one parent

• having two alleles from both parents

Organisms refers to

• Bacteria

• Bacteria and Viruses

• Animals

• all living things (animals, humans, plants, bacteria, and viruses).

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