HI PLZ HELP
A carrier is a person who:
Select one:
a. carries two dominant genes for a trait
b. carries a dominant X-linked gene
c. has a gene in their genotype that does not appear in their phenotype
d. has a gene in their genotype that is also expressed in their phenotype
To determine the correct answer, let's break down the options and understand what each one means:
a. carries two dominant genes for a trait: This option refers to an individual having two copies of a dominant gene for a specific trait. However, this is not the definition of a carrier.
b. carries a dominant X-linked gene: This option suggests that a carrier carries a dominant gene on the X chromosome. While this can be true in certain scenarios, it is not a comprehensive definition of a carrier.
c. has a gene in their genotype that does not appear in their phenotype: This option defines a carrier accurately. In genetics, a carrier is an individual who carries a gene in their genotype, but it is not expressed in their phenotype. This is commonly observed in individuals who carry recessive genes for a trait or condition.
d. has a gene in their genotype that is also expressed in their phenotype: This option is not indicative of a carrier. If a gene is expressed in both the phenotype and genotype, then it does not align with the concept of being a carrier.
Based on the explanations given, the correct answer is:
c. has a gene in their genotype that does not appear in their phenotype