Genetics and Heredity 1

What is a trait?

• A piece of DNA

• A condensed rod of chromatin

• A characteristic that can be passed to offspring

• A way to change DNA

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Gregor Mendel studied _______ for many years and made conclusions about their inheritance.

• grasshoppers

• meerkats

• pea plants

• unicellular organisms

What are the different forms of a gene called?

• traits

• nitrogen bases

• phenotype

• alleles

An organism's genetic make up, or allele combinations, is referred to as

• genotype

• phenotype

• homozygous

• heterozygous

If an organism has 2 identical alleles for a trait, what term would you use to describe their genotype?

• heteroygous

• homozygous

• hybrid

• multiple alleles

If an organism has the genotype aa,

they are considered

• homozygous dominant

• heterozygous

• homozygous recessive

• heterozygous recessive

In cats, having green eyes (G) is dominant to having brown eyes (g). What would be the genotype of a brown eyed cat?

• GG

• Gg

• gG

• gg

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True or False? 2 organisms with different genotypes can have the same phenotype.

• True

• False

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If an organism reproduces asexually, which of the following statements is correct?

• All of the offspring are identical to each other

• All of the offspring have the same DNA as the parent

• Only one parent's DNA was used to create the offspring

• All of the above

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If a homozygous tall plant is crossed with a homozygous short plant, what do you predict will be the height of the offspring plants?

• tall

• short

• some tall and some short

• medium sized

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