Question

Which human cells never have 23 pairs of chromosomes?

A. blood cells

B. nerve cells

C. mature sex cells

D. mutant cells

Answer 1

I'd say B

Answer 2

why do you think B?

Answer 3

Well, I'd think it could be possible

Answer 4

nerve cells are diploid, that means they have a full set of chromosomes (23 pairs, so 46 chromosomes total)

We need a haploid cell, which always have only 1 chromosome of those pairs. so 23 total

Answer 5

All body cells are diploid which means they have 23 pairs or 46 chromosomes.

Answer 6

Ohhh okay

Answer 7

So then that would be...

Answer 8

blood cells do not always have 23 pairs of chromosomes, red blood cells do not have chromosomes at all. But white blood cells do. So we can eliminate A

Answer 9

Okay so it's between C and D

Answer 10

Mutant cells CAN have more or less than 23 pairs or chromosomes, but that doesn't say they never have 23 PAIRS. Because most mutant cells do have 23 pairs of chromosomes.

Answer 11

sex cells are always haploid. So when 2 sex cells of a male and a female come together, you have 23+23 = 46 chromosomes, so 23 pairs.

Answer 12

Ohhhhh okay. I see thanks so much!!!

Answer 13

so.... C .-.