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Modeling Sexual Reproduction Quick Check

1. Which trait is inherited?
Hair length
Physical fitness
Scars
Freckles (correct)

2. What is an allele?
A trait that can be masked
A variant form of a gene (correct)
A trait that appears in an offspring if one of the parents contributes it
A non-inherited trait

3. A student claims that dominant traits are always the most common traits. Is this true? Why or why not?
im not typing allat its "No, dominant traits only show up if they are inherited; how common they are is not influenced by this.

4. Which statement below correctly describes a component of sexual reproduction?
still not typing allat its "Each parent has two alleles per trait and passes one allele to their offspring."
5. yeah its just this
Mother's Father: bb (blonde hair)
Father: Bb (brown hair)
Father's Father: BB (brown hair)

1 answer

Here are the answers to the quick check based on your provided statements:

  1. Which trait is inherited?
    Answer: Freckles (correct)

  2. What is an allele?
    Answer: A variant form of a gene (correct)

  3. A student claims that dominant traits are always the most common traits. Is this true? Why or why not?
    Answer: No, dominant traits only show up if they are inherited; how common they are is not influenced by this.

  4. Which statement below correctly describes a component of sexual reproduction?
    Answer: Each parent has two alleles per trait and passes one allele to their offspring.

  5. Genotype Analysis:
    Given the genotypes:

    • Mother's Father: bb (blonde hair)
    • Father's Father: BB (brown hair)
    • Father: Bb (brown hair)

    To analyze the offspring's potential hair color:

    • The mother would pass on either b (blonde) since her father is bb.
    • The father can pass on either B (brown) or b (blonde) since he has a Bb genotype.

This means the possible combinations for their offspring would be:

  • Bb (brown hair) if the father passes B
  • bb (blonde hair) if the father passes b

Therefore, the chances for hair color in the offspring based on these combinations are 50% for brown hair and 50% for blonde hair. Please provide additional details if you have specific questions regarding the potential offspring!