X linked Recessive Traits Practice

If a gene is found only on the X chromosome and not the Y chromosome, it is said to be what?

• sex-linked trait
• autosomal dominant trait

• not a genetic trait

• autosomal recesssive trait

I have 1 X chromosome and 1 Y chromosome. What am I?

• Male
• Female

I have 2 X chromosomes. What am I?

• Male
• Female

How many PAIRS of sex chromosomes do humans have?

• 23
• 46
• 1
• 2

How many PAIRS of chromosomes do humans have?

• 23
• 46
• 1
• 2

Which labeled chromosome could you find the gene for a sex linked recessive trait? Select all that apply.

• A

• B

• C

• D

Which labeled chromosome could you find the gene for an autosomal trait? Select all that apply.

• A

• B

• C

• D

Hemophilia is a recessive x-linked disorder.
Which genotype represents a female who is a carrier for hemophilia?

• X^HX^h
• X^hX^h
• X^HX^H
• X^hY

Hemophilia is a recessive x-linked disorder.
Which genotype represents a male with hemophilia?

• X^HX^h
• X^hX^h
• X^HY
• X^hY

The sex of a child is determined by

• whether the father's sperm contains an x or y chromosome
• whether the mother's egg contains an x or y chromosome
• the age of the parents