Question

Sickle cell disease is caused by a
a.
small change in the DNA of a single gene.
b.
change in the size of a chromosome.
c.
change in two genes.
d.
change in the number of chromosomes in a cell.
e.
change in number of genes

Answer 1

oohhhh more flashbacks :DDDDD
I think sickle cell is a genetic disorder
so it is probably caused by a mutations which is change in DNA would yah agree ?

Answer 2

so A right

Answer 3

yeah, I'm pretty sure it's A too. good job superhelp :)

Answer 4

Oh no sorry my computer just turned off but I think it could also be Change in to parents ?!?!?

Answer 5

parents?

Answer 6

da faq lol

Answer 7

Change in two genes is what I mean

Answer 8

oh lol

Answer 9

both parents need to carry the trait for sickle cell disease in order to pass it onto their child

Answer 10

I mean pass the disease onto the child

Answer 11

so umm whats the answer?

Answer 12

Oh Yayay thanks

Answer 13

small change in the DNA of a single gene.

Answer 14

A

Answer 15

or change in 2 genes

Answer 16

okay so you were right first time :D

Answer 17

well done 72

Answer 18

next q

Answer 19

second time :D

Answer 20

the answer is
small change in the DNA of a single gene.
yes

Answer 21

whooo autocheck huh ?

Answer 22

omg stop confusing me

Answer 23

i am saying its A