Chapter 3 Lectures

Question 1

How many chromosomes does a haploid have?

Answer 1

23

Question 2

fertilization

Answer 2

egg fuses with sperm and creates diploid zygote

Question 3

how do plants reproduce

Answer 3

pollen double fertiliizes 1 egg which makes 2 zygote

Question 4

Chromosomes

Answer 4

DNA and Protein highly condensed DNA

Question 5

Centromere

Answer 5

connects 2 sister chromitids

Question 6

Name the types of chromosomes and where p arm vs q arm is?

Answer 6

A. telocentric
B. Acrocentric
C. Subcentric
D. Metacentric
P arm is the top which is shorter than q
Q arm is the bottom

Question 7

Which chromosome in humans are what?

Answer 7

1-22 autosomal
23 sex

Question 8

What percentage does a cell spend in each part of Cell cycle

Answer 8

G1 25 %
S 40%
G2 25%
Mitosis 10%

Question 9

Where do all cells in the human come from

Answer 9

zygote cell

Question 10

What does bivalent mean

Answer 10

2 sister chromatids on 1 chromosome

Question 11

Meisosis

Answer 11

reduction cell division but DNA is replicated before meiosis I

Question 12

Meiosis split

Answer 12

2n 1 cell then meiosis I
n 2 cells then meiosis 2
n 4 cells

Question 13

What separates during meiosis I and meiosis II

Answer 13

Homologous chromosomes seperate during meiosis I
2 sister chromids separate during meiosis II

Question 14

Draw out the process of mitosis

Answer 14

Look at Genetics study sheet

Question 15

Draw out meiosis

Answer 15

Look at genetics study sheet