Here are the answers based on the questions provided:
Question 1
A) Which trait is inherited?
- Responses:
- hair length
- freckles
- physical fitness (Note: this is not directly inherited; it is influenced by genetics but also by lifestyle factors.)
- scars (Not inherited; acquired through experience, such as injury)
Correct answer: freckles (but hair length could also be considered depending on the context).
Question 2
A) What is an allele?
- Responses:
- a trait that appears in an offspring if one of the parents contributes it
- a trait that can be masked
- a variant form of a gene
- a non-inherited trait
Correct answer: a variant form of a gene
Question 3
A) A student claims that dominant traits are always the most common traits. Is this true? Why or why not?
- Responses:
- No, dominant traits in general tend to be less common in the population and continue to persist only because they are dominant over more common recessive alleles.
- No, dominant traits only show up if they are inherited; how common they are is not influenced by this.
- Yes, dominant traits became more common over time as they are passed down from generation to generation; recessive alleles continue to become less common over time.
- Yes, dominant traits are called dominant because they are the most common.
Correct answer: No, dominant traits in general tend to be less common in the population and continue to persist only because they are dominant over more common recessive alleles.
Question 4
A) Which statement below correctly describes a component of sexual reproduction?
- Responses:
- Each parent has two alleles per trait and passes one allele to their offspring.
- One parent passes down the majority of genes an offspring will receive.
- Each parent has two alleles and they pass both down to their offspring.
- Only dominant alleles are passed to offspring.
Correct answer: Each parent has two alleles per trait and passes one allele to their offspring.
Question 5
A) A chart shows allele combinations for brown/blonde hair… (The chart's descriptions seem to contain errors but let's resolve the allele combinations based on descriptions.)
- Mother’s Father: BB (brown hair)
- Father: Bb (brown hair)
- Father’s Father: Bb (brown hair)
- Child: bb (blonde hair)
Correctly match them:
Responses to be matched:
- Mother’s Father: BB (brown hair)
- Father: Bb (brown hair)
- Father’s Father: Bb (brown hair although the last name is provided; since "Father's Father" is already specified, we assume he also carries the brown hair phenotype)
- Child: bb (blonde hair)
Ensure to double-check these findings as per your specific course materials or educational context.