Lesson 3 Flashcards
1
Q
sexual reproduction
A
A type of reproduction in which a sperm cell and an egg cell unite to form a single cell. That new cell is a baby.
2
Q
genes
A
Genes are pieces of DNA that carry all the imformation passed from parents to their baby.
3
Q
How does DNA control 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 daughter cell has a full set of chromosome
meiosis: used for reproduction, each cell have half a set chromosome.
