8th Chapter 2

The genetic make up of an organism is a

• Phenotype
• Xylem
• Genotype
• Homozygous

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An organisms physical traits. 

• Phenotype
• Xylem
• Genotype
• Homozygous

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Recessive traits are hidden when dominant traits are present.

• True
• False

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This organism is dominant or recessive.

• Heterozygous
• Homozygous

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Organisms that have 1 dominant trait and 1 reccessive trait are...

• Heterozygous
• Homozygous

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Look at the picture. The probability that a child will inherit the recessive trait is

• 25%
• 50%
• 75%
• 100%

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Name the dominant genotype(s)

• RR
• rr
• RR, rR
• RR, Rr

Which trait(s) is recessive?

• RR
• rr
• rR
• Rr

What is a mutation and how does it affect genes?

• A mutation is a growth on an organism.
• A mutation is a copy of a gene.
• A mutation is a change in an organisms genes.
• A mutation is a feature of an organism.

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How do organisms get their traits?

• They get thier traits from their environment.
• They inherit one copy of a gene from their mother.
• They inherit  copy of a gene version from their mother and father.
• They get their traits from the proteins they eat.

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