Chromosome Flashcards
1
Q
What’s a chromosome
A
Packaging for DNA
2
Q
How many chromosomes does a human DNA have?
A
46 chromosomes / 23 pairs (1pair sex chromosome, 22 pair of ‘autosomes‘)
3
Q
Inheritance of Chromosomes
A
People have 2 copies of each chromosome, 1 inherited from the mother via the egg, and another from the dad via sperm.
4
Q
X chromosomes
A
One of two sex chromosomes. Female has two XX while males have one X
5
Q
Y chromosomes
A
One of the two sex chromosomes, males have one Y. and one X
6
Q
Autosome
A
Any chromosome that is not a sex chromosome (chromosomes 1-22)
7
Q
Down syndrome
A
Have an extra copy of chromosome 21
8
Q
Karyotype
A
A visual image of all of an individual’s chromosomes, arranged by number.
