Extending Mendel Review

Front

What is the reason males are more likely to present some sex-linked traits?

Back

Males only need one allele for it on their only X chromosome.

Front

In incomplete and codominance, is there a dominant or recessive allele?

Back

No, there is no dominant or recessive allele.

Front

What are the male sex chromosomes?

Back

XY.

Front

Are dominant traits always more common than recessive traits?

Back

No, dominant traits are not always more common.

Front

What type of inheritance pattern results in patches of each phenotype in heterozygous individuals?

Back

Codominance.

Front

What is codominance?

Back

A genetic scenario where both alleles in a heterozygote are fully expressed.

Front

What is incomplete dominance?

Back

A genetic scenario where the phenotype of heterozygotes is intermediate between the phenotypes of the two homozygotes.

Front

What is a sex-linked trait?

Back

A trait associated with a gene that is carried only by the male or female parent.

Front

How many X chromosomes do females have?

Back

Females have two X chromosomes (XX).

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles express their trait even if only one copy is present, while recessive alleles require two copies to express their trait.