Extending Mendel Review

Front

What is a sex-linked trait?

Back

A trait that is associated with a gene that is carried only by the male or female parent, often found on the X chromosome.

Front

Why are males more likely to present some sex-linked traits?

Back

Because they only need one allele for it on their only X chromosome.

Front

What is codominance in genetics?

Back

A type of inheritance pattern where both alleles in a heterozygous individual are fully expressed, resulting in patches of each phenotype.

Front

What is incomplete dominance?

Back

A type of inheritance pattern where the phenotype of heterozygous individuals is a blend of the two parental traits.

Front

What does a Punnett square predict?

Back

The probability of having offspring with certain traits, including the likelihood of potential offspring being males and the possibility of inheriting genetic diseases.

Front

What is a dominant trait?

Back

A trait that is expressed in the phenotype even when only one allele is present.

Front

What is a recessive trait?

Back

A trait that is only expressed in the phenotype when two copies of the allele are present.

Front

Can dominant traits be less common than recessive traits?

Back

Yes, dominant traits are not always more common; their frequency depends on the population.

Front

What is the purpose of a Punnett square?

Back

To visualize and calculate the probability of different genotypes and phenotypes in offspring.

Front

What is the difference between genotype and phenotype?

Back

Genotype refers to the genetic makeup of an individual, while phenotype refers to the observable traits.