Inheritence of sex (SB3) Flashcards
1
Q
Is a person’s sex determined by a gene
A
No, a whole pair of chromosomes is needed
2
Q
What chromosomes do females have in pair 23
A
They carry 2 ‘X’ chromosomes
3
Q
What chromosomes do males have in pair 23
A
They carry an ‘X’ and a ‘Y’ chromosome
4
Q
What does meiosis split
A
Our pairs of chromosomes
5
Q
What does each egg receive in meiosis
A
They receive ‘X’ chromosomes
6
Q
What does a sperm receive in meiosis
A
Half receive ‘X’ and half receive a ‘Y’
7
Q
How do male or female chromosomes occur
A
Determined by the sperm cell
