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Genetics > Chapter 2- Mitosis and Meiosis > Flashcards

Chapter 2- Mitosis and Meiosis Flashcards

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Biology 101 flashcards
1
Q

Whats Centromere

A

Chromosomal region where sister cromatids are held together until anaphase

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2
Q

Whats Homologous chromosomes

A

a set of one maternal and one paternal chromosome that pair up with each other in cell

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3
Q

Tetraploids advantage over Diploids

A

increased cell size, Hybrid vigor where hybrids are better!!

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4
Q

Tetraploids disadvantage over diploids

A

Delayed development, Inbreeding depression.

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5
Q

Order the chromosome types by where they are connected

A

Metacentric, at center
Submetacentric, a bit below
Acrocentric, Near end
Telocentric at the end

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6
Q

whats cell division

A

the proccess which a parent cell divides between two or more daughter cells

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7
Q

How do mitochondrium and plastids dvide

A

by binnary fission

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8
Q

Whats Uniparental inheritance

A

offspring from single parent

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9
Q

Whats biparental inheritance

A

Offspring from both parent genes

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10
Q

What happens at g1 mitosis

A

Cell size increase

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11
Q

what happens s in mitosis

A

DNA replication

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12
Q

What happens at g2

A

mitochondria and microtubules divide

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13
Q

What happens at prophase

A

Chromosoms condense

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14
Q

What happens at prometaphase

A

Nuclear envelope fragments

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15
Q

What happens at metaphase

A

Chromosomes allign at cells equator

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16
Q

What happens at anaphase

A

Sisterchromatids seperate

17
Q

Howdoes anaphase seperate chromosomes

A

Microtubules and motor proteins, kinesin and dynein

18
Q

Mitosis occurs in

A

Development and growth
Cell replacement
Regeneration
Asexual reproduction

19
Q

Whats open and closed mitosis

A

At open nuclear envelope breaks at closed doesnt

20
Q

Where is the checkpoints in mitosis

A

G1 G2 and M

21
Q

Whats Synaptonemal Complex?

A

How does sister CHROMOSOMES find each other

22
Q

Holliday JUNCTION whats that

A

it just at chrossing over

23
Q

whats benefits of chrossing over

A

GENETIC DIVERSITY

Genetics (4 decks)

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