Chapter 13 Meiosis

Question 1

Meiosis

Answer 1

Modified type of cell division in sexual organism which replicates DNA once and divides twice

Question 2

Alternation of generations

Answer 2

Life cycle in which there is both a sporophyte, and gametophyte

Question 3

Sporophyte

Answer 3

Form of a Multicellular diploid cell

Question 4

Gametophyte

Answer 4

Form of a multicellular haploid cell

Question 5

Where does alternation of generation take place

Answer 5

In plant and some algae

Question 6

Meiosis 1

Answer 6

First cell division of meiosis resulting in cells with half the number of chromosome sets as the original

Question 7

Meiosis 2

Answer 7

Second division in meiosis which results in cells with half the number id chromosome sets as the original

Question 8

How many daughter cells does meiosis form

Answer 8

4 genetically different daughter cells

Question 9

Allele

Answer 9

Any alternative version of genes

Question 10

what occurs in Prophase 1

Answer 10

Duplicated homologous chromosomes pair up and exchange segments

Question 11

what occurs in Metaphase 1

Answer 11

Chromosome line up by homologous pair at metaphase plate

Question 12

what occurs in anaphase 1

Answer 12

2 Homologous chromosomes of each pair separate

Question 13

what occurs in telophase 1 & cytokinesis

Answer 13

2 daughter haploid cells form

Question 14

what occurs in prophase 2

Answer 14

Spindle apparatus forms

Question 15

what occurs in metaphase 2

Answer 15

Chromosomes position at metaphase plate

Question 16

what occurs in anaphase 2

Answer 16

Sister chromatids are separated and move towards opposite poles

Question 17

what occurs in telophase 2 & cytokinesis phase

Answer 17

Nuclei formation, chromosomes decondense, & cytokinesis

Question 18

Synaptonemal complex

Answer 18

Protein complex that connects a chromosome to its homologous pair along their lengths in prophase 1

Question 19

Synapsis

Answer 19

Pairing of physical connection of one duplicated chromosome to its homolog in prophase

Question 20

Chiasmata

Answer 20

X shaped region where crossing over has occurred in prophase 1 between non sister chromatids

Question 21

When is chiasmata visible

Answer 21

After synapsis ends

Question 22

Recombinant chromosomes

Answer 22

A chromosome created when crossing over combines DNA from 2 parents into single chromosomes

Question 23

What can cause differing alleles

Answer 23

Mutations