Reproduction

Question 1

G1 phase?

Answer 1

cell increases its organelles and cytoplasm

Question 2

S phase?

Answer 2

DNA replication

Question 3

G2 phase?

Answer 3

cell increases its organelles and cytoplasm

Question 4

M phase?

Answer 4

cell divides in two

Question 5

Interphase?

Answer 5

G1, S, G2

Question 6

Stages of Mitosis? Meiosis?

Answer 6

Prophase
Metaphase
Anaphase
Telophase

Meiosis- same but x2

PMAT

Question 7

What happens during prophase 1 of meiosis?

Answer 7

• two pairs of sister chromatids form tetrads

- crossing over leads to genetic recombination

Question 8

What happens during metaphase 1 of meiosis?

Answer 8

homologous chromosomes separate

Question 9

What is the difference between meiosis 2 and mitosis?

Answer 9

no replication

Question 10

Where does meiosis occur?

Answer 10

during spermatogenesis and oogenesis

Question 11

What are the 4 stages of early development?

Answer 11

1. cleavage
2. implantation
3. gastrulation
4. neurulation

Question 12

Cleavage?

Answer 12

mitotic divisions

Question 13

Implantation?

Answer 13

embryo implants during blastula stage

Question 14

Gastrulation?

Answer 14

ecto, endo, mesoderm form

Question 15

Neurulation?

Answer 15

germ layers develop a nervous system

Question 16

Ectoderm?

Answer 16

nervous system, epidermis, lens of eye, inner ear

Question 17

Endoderm?

Answer 17

lining of digestive tract, lungs, liver and pancreas

Question 18

Mesoderm?

Answer 18

muscles, skeleton, circulatory system, gonads, kidney