Chromosomes Flashcards
1
Q
What are chromosomes?
A
strings of DNA wound up or condensed
2
Q
What is one chromosome made up of?
A
a single, long string of DNA
3
Q
How many pairs of chromosomes in every human cell?
A
23 pairs
4
Q
How many chromosomes do humans have?
A
46
5
Q
What do chromosomes consist of?
A
one pair of chromatids
6
Q
what is the ‘x’ shape of the chromosome?
A
two chromatids joined together to form a chromosome
7
Q
What is a centromere?
A
middle of the chromosome
8
Q
What chromosomes do males have?
A
an X and a Y chromosome
9
Q
What chromosomes do females have?
A
two X chromosomes
10
Q
Where do you get your copy’s of each chromosome from?
A
One from the mother, one from the father.
11
Q
how many sex chromosomes in our 23 pairs?
A
one pair
