Lesson 3 Flashcards
1
Q
sexual reproduction
A
A type of reproduction in wichn a sperm cell and an egg cell unite to form a single cell.
2
Q
genes
A
It is a piece of DNA that pass from a parent to a baby.
3
Q
How does DNA controls life activities?
A
The DNA is a instruction of our body that how to do everything and they plan to build every organisms.
4
Q
How do cells divide to make new cells and to make reproductive cells?
A
mitosis: For normal body cells divide this way. Each daughter cell has a full set of chromosomes.
meiosis: For reproduction . Each daughter cell has a half of chromosones.
