Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Heredity Exam 2 > Meiosis > Flashcards

Meiosis Flashcards

1
Q

Meiosis

A

Cell division in which haploid cells are produced from diploid cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Haploid

A

2n

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Diploid

A

n

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What does meiosis produce?

A

eggs and sperm(gametes) cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Meiosis is the primary mechanism that helps produce and maintain…

A

genetic variability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What does meiosis result in?

A

4 daughter cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Genetic diversity can help a population…

A

survive an environmental challenge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What phase does replication occur in?

A

s phase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Homologous chromosomes

A

2 copies of each chromosome

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Alleles

A

alternate forms of a gene

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

How many divisions does meiosis have?

A

2= meiosis 1 and meiosis 2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Meiosis 1=

A

the reduction division
- reduces # of chromosomes from 46 to 23
- produces 2 cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Meiosis 2=

A

the equational division
- produces 4 cells from the two produced in meiosis 1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Each division consists of these phases:

A

Prophase, metaphase, anaphase and telophase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Mendel’s Law of Segregation(begin meiosis 1)

A

At the end of meiosis each gamete carries one copy of each allele

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Crossing over

A

Synapsed chromosomes separate but remain attached at a few points

17
Q

Crossing over helps create…

A

genetic diversity- new combinations of genes are formed

18
Q

When does crossing over happen?

A

Metaphase 1

19
Q

Mendel’s second law: Independent Assortment

A

Homologous pairs are separated into daughter cells during meiosis (Look at pictures drawn from SI/ PowerPoint)

20
Q

What causes independent assortment?

A

Random alignment of chromosomes

21
Q

Is independent assortment 2n or n?

A

2n

22
Q

Meiosis 2 result…

A

4 haploid cells

23
Q

Know Meiosis drawing

A

in slides or notes

24
Q

Spermatogenesis

A

production and development of mature sperm cells

25
Q

Ogenesis

A

production and development of polar body and ovum, ovum becomes mature egg

26
Q

sperm vs egg

A

spermatogenesis results in 4 sperate sperm
oogenesis results in one polar body and one egg

27
Q

somatic cell

A

any cell of the body except sperm and egge

28
Q

gamete cell

A

reproductive cell= egg and sperm

29
Q

somatic vs gamete

A

somatic= haploid, 23 different chromosomes which means 46 total
gamete= diploid, 23 chromosomes total

Heredity Exam 2 (7 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions