lesson 3 Flashcards
1
Q
sexual reproduction
A
A type of reproduction in which a sperm cell and egg cell unite to form a single cell.
2
Q
genes
A
Pieces of DNA that carry all the information passed from parents to their baby.
3
Q
How does DNA controls lifes activities?
A
The DNA is instruction on how to build organisms.
4
Q
How do cells divide to make new cells and to make reproductive cells?
A
mitosis: normal body cells divide this way.Each daughters has cell has a full set of chromosome.
meiosis: used for reproduction,each cell has half a set of chromosome.
