Genetics/Chromosomes

How many PAIRS of chromosomes determine human traits?

• 34

• 23

• 46

• 68

Male cells have one X chromosome and one Y chromosome.

• True

• False

Female cells have two Y chromosomes.

• True

• False

Most of the genes for sex-linked traits are found on the ________ chromosome.

• X

• Y

• Z

• Q

A sex-linked disorder in which blood doers not clot properly.

• Colorblindness

• PKU

• Tay-Sachs

• Hemophilia

Sex-linked disorders are found more often in men than in women.

• True

• False

Most genes for sex-linked disorders are dominant.

• True

• False

A person with one normal gene and one gene for a disorder is called a(n) _________________.

• sufferer

• carrier

• enabler

• purebred

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A person with Sickle-Cell Disease has white blood cells that are not normally shaped.

• True

• False

Tags

NGSS.HS-LS3-2

People with PKU are missing an enzyme that is made in the ___________________.

• pancreas

• spleen

• liver

• kidney