2. Mendel's Laws of Inheritance

Why is it unusual for a calico cat to be male?

Which of the following statements about sex-linked genes and blood type inheritance is correct?

Which statement most accurately explains why Duchenne muscular dystrophy (DMD) affects males more often than females?

X-linked recessive traits in humans (or in Drosophila) are observed most frequently in which group?

X-linked genes differ from Y-linked genes in which of the following ways?

Since the allele for colorblindness is located on the X chromosome, colorblindness:

In X-linked patterns of inheritance, which of the following is true?

Which sex is more likely to express a recessive X-linked genetic disorder?

A researcher observes that a mutant trait appears more frequently in males than in females and that affected fathers do not pass the trait to their sons. Which of the following best explains whether the mutant trait is X-linked?

In a sex-linked pedigree, if females are labeled as 'XX', how should males be labeled?

In cats, the gene for fur color is located on the X chromosome, with the allele for black fur (B) and the allele for orange fur (O) being codominant. Which of the following fur colors are possible in male cats?

Males are more often affected by X-linked traits than are females because:

How are alleles for sex-linked traits typically inherited in humans?

In the context of DNA structure, which nitrogenous base forms complementary base pairs with cytosine?

Which X-linked recessive vision disorder, affecting about 8% of Caucasian males, is known as red-green?