human life cycle Flashcards
1
Q
what are the three stages in the human life cycle?
A
fertilization
mitosis
meiosis
(in this order- repeats)
2
Q
what is fertilization?
A
union of 2 gametes form zygote
3
Q
what does fertilization result in?
A
2n (n+n)
4
Q
what does mitosis allow for?
A
growth and development
5
Q
what does mitosis produce?
A
all other cells in the body with diploid (2n) number of chromosomes
6
Q
what chromosomes are present in mitosis?
A
homologous chromosomes
7
Q
where does meiosis occur?
A
in reproductive organs
8
Q
what does meiosis create?
A
gametes with haploid (n) number of chromosomes
9
Q
what chromosomes are present in meiosis?
A
one of each homologous pairs
