What is an allele?
a non-inherited trait
a trait that can be masked
a variant form of a gene
a trait that appears in an offspring if one of the parents contributes it
5 answers
A variant form of a gene
A student claims that dominant traits are always the most common traits. Is this true? Why or why not?
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.
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.
No, dominant traits only show up if they are inherited; how common they are is not influenced by this.
Yes, dominant traits are called dominant because they are the most common.
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.
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.
No, dominant traits only show up if they are inherited; how common they are is not influenced by this.
Yes, dominant traits are called dominant because they are the most common.
No, dominant traits are not always the most common traits. The frequency of a trait in a population depends on various factors including selection pressures, gene flow, genetic drift, and mutation rates. Dominant traits may be less common in a population if they are not advantageous or if they are associated with negative effects. Additionally, recessive traits can still be present in a population even if they are less common because they can be carried as a hidden trait in individuals who are heterozygous for that trait. Therefore, the frequency of a trait in a population is not solely determined by whether it is dominant or recessive.
Which statement below correctly describes a component of sexual reproduction?
Only dominant alleles are passed to offspring.
Each parent has two alleles and they pass both down to their offspring.
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.
Only dominant alleles are passed to offspring.
Each parent has two alleles and they pass both down to their offspring.
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.
The statement "Each parent has two alleles per trait and passes one allele to their offspring" correctly describes a component of sexual reproduction. In sexual reproduction, each parent contributes one allele for each trait to their offspring.