Ch 12-1 review

I have 2 X chromosomes. What am I?

• Male
• Female

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

• Male
• Female

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

• sex-linked trait
• polygenic trait
• codominant trait
• incomplete dominance trait

What percentage of the offspring will have this recessive disease?

• 0%
• 25%
• 50%
• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

What percentage of the female offspring will be a carrier for this recessive disease?

• 0%
• 50%
• 100%
• 25%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

How many PAIRS of chromosomes do humans have?

• 23
• 46
• 1
• 2

Tags

NGSS.HS-LS3-2

How many PAIRS of sex chromosomes do humans have?

• 23
• 46
• 1
• 2

If a woman is a carrier for a sex linked recessive trait of hemophilia and her husband has hemophilia, which of the following is true? Make a punnett square!

• All sons will have hemophilia
• all daughters will have hemophilia
• 50% of daughters and 50% of sons have hemophilia
• 100% of sons have hemophilia and 100% of daughters are carriers

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

What kind of trait is colorblindness if females can be carriers without having the disease?

• Regular trait
• Sex-linked trait

What determines gender in humans? 

• the X and Y chromosome
• chromosome 21
• codominance
• epistasis

Tags

NGSS.HS-LS3-1