Honors Makeup Unit 4 Quiz 1

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One cat carries heterozygous, long-haired traits (Ss), and its mate carries homozygous short-haired traits (ss). Use a Punnett square to determine the probability of one of their offspring having long hair.

• 100%
• 25%
• 75%
• 50%

One cat carries heterozygous, long-haired traits (Ss), and its mate carries homozygous short-haired traits (ss). Use a Punnett square to determine the probability of one of their offspring having short hair.

• 25%
• 50%
• 75%
• 100%

One flower is heterozygous red (Rr) and it is crossed with a homozygous white (rr) plant. Use a Punnett square to determine the probability of one of their offspring having a red color.

• 75%
• 25%
• 50%
• 100%

One flower is heterozygous red (Rr) and it is crossed with a homozygous white (rr) plant. Use a Punnett square to determine the probability of one of their offspring having a white color.

• 100%
• 25%
• 75%
• 50%

If a homozygous black guinea pig (BB) is crossed with a homozygous white guinea pig (bb), what is the probability that an offspring will have black fur?

• 25%
• 50%
• 75%
• 100%

Scientists call an organism that has two different alleles for a trait a ...

• hybrid
• trait
• purebred
• factor

What does the allele notation TT mean to geneticists?

• homozygous dominant
• homozygous recessive
• heterozygous dominant
• heterozygous