reproduction Flashcards
(7 cards)
1
Q
what is mitosis?
A
single cell doubling over and over
2
Q
how many chromosomes does haploid have?
A
23
3
Q
how many chromsomes does a diploid have?
A
46
4
Q
tell me the steps of fertilzation?
A
egg (ovum) + sperm (FERTILIZTION) -> zygote -> embryo
5
Q
Asexual steps
A
Asexual -> mitosis = beneficial in unchanging enviroment
6
Q
sexual steps
A
Sexual -> meiosis = beneficial in changing enviroments
7
Q
placenta function
A
placenta allows the mothers blood to come close to the babys to allow exchange of food, oxygen, and wastes by diffusion
placenta has large S/A
