Meiosis Quiz

Front 1

Whats this

Back 1

A sematic cell, 2n, diploid

Front 2

What is this?

Back 2

Crossover

Front 3

What happens in metaphase 1?

Back 3

It is the stage where homologous chromosomes line up

Front 4

What happens in anaphase 1?

Back 4

Reduction division

Front 5

According to model 1, in what type of organs are the cells that enter meiosis 1 found?

Back 5

Sex organs, ovaries and testes in animals

Front 6

Considering what you already know about mitosis in cells, what event must take place during interphase before a cell proceeds to division?

Back 6

DNA duplication

Front 7

What two structures make up a single replicated chromosome?

Back 7

Sister chromatids

Front 8

What are alleles?

Back 8

Alternative forms of the same gene

Front 9

Homologous chromosomes?

Back 9

Chromosomes that contain the same genes, although each chromosome in the homologous pair may have different alleles

Front 10

At which stage in meiosis 1 do the pairs of homologous chromosomes line up?

Back 10

Metaphase 1

Front 11

Once the chromosomes have formed a pair, what are they called?

Back 11

Tetrad

Front 12

What happens in anaphase 2?

Back 12

The sister chromatids separate

Front 13

After meiosis 2, what cells are made? How many?

Back 13

Haploid, 4

Front 14

Where did each if the cells come from that started meiosis 2?

Back 14

From meiosis one

Front 15

During anaphase1 which structures separated---homologous chromosomes or sister chromatids?

Back 15

Homo

Front 16

During anaphase 2, which separated--- homo chromosomes or sister chromatids?

Back 16

Sister chromatids

Front 17

At the end of meiosis 2 are four daughter cells. Are they haploid or diploid? Explain

Back 17

Haploid, because they split apart at the end of telophase

Front 18

______ cells go through meiosis, and 4 _________ sperm come out.

Back 18

2, mature

Front 19

Even though ___ cells are made, 1 ____ is produced

Back 19

4, egg

Front 20

What is the ploidy of the zygote produced by fertilization--- hap or dip?

Back 20

Diploid

Diploid= haploid + haploid

(Zygote). (Egg). (Sperm)

Front 21

At which stage of meiosis are h chromosomes in model 4?

Back 21

Prophase 1

Front 22

Describe what happens to the chromatids during crossover?

Back 22

They divide, switches over, and recombines.

Front 23

What phrase is used to describe the chromatids after crossing over takes place and the homologous chromosomes separate?

Back 23

Recombinant chromatids

Front 24

Are the genes on recombinant chromatids the same as the original chromatid?

Back 24

Yes

Front 25

Are the alleles on a recombinant chromatid the same as the original chromatid?

Back 25

No

Front 26

Explain how meiotic events, as well as the random fertilization of eggs and sperm, together lead to this genetic variation.

Back 26

Multiple sperm, random fertilization- causes genetic variation.

B/c of meiosis, there is genetic variation: 2 STAGES

Prophase 1= crossover

Metaphase 1= homologous pairs line up randomly

Front 27

KNOW WHAT HAPPENS IN MITOSIS

Back 27

Study mitosis notes on classroom