Chapter 2- Mitosis and Meiosis Flashcards
Whats Centromere
Chromosomal region where sister cromatids are held together until anaphase
Whats Homologous chromosomes
a set of one maternal and one paternal chromosome that pair up with each other in cell
Tetraploids advantage over Diploids
increased cell size, Hybrid vigor where hybrids are better!!
Tetraploids disadvantage over diploids
Delayed development, Inbreeding depression.
Order the chromosome types by where they are connected
Metacentric, at center
Submetacentric, a bit below
Acrocentric, Near end
Telocentric at the end
whats cell division
the proccess which a parent cell divides between two or more daughter cells
How do mitochondrium and plastids dvide
by binnary fission
Whats Uniparental inheritance
offspring from single parent
Whats biparental inheritance
Offspring from both parent genes
What happens at g1 mitosis
Cell size increase
what happens s in mitosis
DNA replication
What happens at g2
mitochondria and microtubules divide
What happens at prophase
Chromosoms condense
What happens at prometaphase
Nuclear envelope fragments
What happens at metaphase
Chromosomes allign at cells equator
What happens at anaphase
Sisterchromatids seperate
Howdoes anaphase seperate chromosomes
Microtubules and motor proteins, kinesin and dynein
Mitosis occurs in
Development and growth
Cell replacement
Regeneration
Asexual reproduction
Whats open and closed mitosis
At open nuclear envelope breaks at closed doesnt
Where is the checkpoints in mitosis
G1 G2 and M
Whats Synaptonemal Complex?
How does sister CHROMOSOMES find each other
Holliday JUNCTION whats that
it just at chrossing over
whats benefits of chrossing over
GENETIC DIVERSITY
