Which trait is inherited?
physical fitness
scars
freckles
hair length
freckles
what is an allele?
a trait that appears in an offspring if one of the parents contributes it
a non-inherited trait
a trait that can be masked
a variant form of a gene
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?
a. 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.
b. Yes, dominant traits are called dominant because they are the most common.
c. 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.
d. No, dominant traits only show up if they are inherited; how common they are is not influenced by this.
d. No, dominant traits only show up if they are inherited; how common they are is not influenced by this.
Dominant traits do not necessarily indicate prevalence in the population. The frequency of a trait in a population is influenced by various factors, including genetic drift, natural selection, and gene flow, rather than just whether a trait is dominant or recessive. Dominant traits can be less common or more common depending on the specific population and evolutionary history.
Which statement below correctly describes a component of sexual reproduction?
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
one parent passes down the majority of genes an offspring will receive