Chapter 3 Lectures Flashcards
How many chromosomes does a haploid have?
23
fertilization
egg fuses with sperm and creates diploid zygote
how do plants reproduce
pollen double fertiliizes 1 egg which makes 2 zygote
Chromosomes
DNA and Protein highly condensed DNA
Centromere
connects 2 sister chromitids
Name the types of chromosomes and where p arm vs q arm is?
A. telocentric
B. Acrocentric
C. Subcentric
D. Metacentric
P arm is the top which is shorter than q
Q arm is the bottom
Which chromosome in humans are what?
1-22 autosomal
23 sex
What percentage does a cell spend in each part of Cell cycle
G1 25 %
S 40%
G2 25%
Mitosis 10%
Where do all cells in the human come from
zygote cell
What does bivalent mean
2 sister chromatids on 1 chromosome
Meisosis
reduction cell division but DNA is replicated before meiosis I
Meiosis split
2n 1 cell then meiosis I
n 2 cells then meiosis 2
n 4 cells
What separates during meiosis I and meiosis II
Homologous chromosomes seperate during meiosis I
2 sister chromids separate during meiosis II
Draw out the process of mitosis
Look at Genetics study sheet
Draw out meiosis
Look at genetics study sheet