cell division

Question 1

stage at which chromosome become visible in light microscope

Answer 1

leptotene

Question 2

the compaction of chromosome

Answer 2

continues through out leptotene

Question 3

synapsis occurs at

Answer 3

zygotene

Question 4

paired chromosomes in zygotene is called as

Answer 4

homologous chromosomes

Question 5

which indicate the formation of synaptonemal complex

Answer 5

electron micro graph

Question 6

bivalent ,tetrad

Answer 6

chromosomes,chromatid

Question 7

four chromatid of each bivalent is clearly visible in

Answer 7

pachytene

Question 8

pachytene is characteristed by

Answer 8

recombination nodules

Question 9

crossing over occurs at

Answer 9

non sister chromatids and homologous chromosome

Question 10

diplotene

Answer 10

dissolution of synaptonemal complex

Question 11

Interphase Dna and chomosome

Answer 11

Dna… Doubles, chromosome remains same

Question 12

Mitosis observed by

Answer 12

Strasbourg in plant cell and by Walter Flemming in animal cell

Question 13

Spireme stage appear in

Answer 13

Prophase

Question 14

Metaphase chromosome are

Answer 14

Thickest and shortest

Question 15

Colchine inhibit mitosis by

Answer 15

Inhibiting formation of microtubule

Question 16

Furrow movement

Answer 16

Centripetal

Question 17

Phragmoplastis formed by

Answer 17

Golgi body grow centrifugal to form cell plate

Question 18

Mitogens

Answer 18

Induce mitosis

Question 19

Eg of mitogens

Answer 19

Auxin, insulin

Question 20

Number of mitotic division req for formation of n numbers of cells are

Answer 20

N-1

Question 21

Number of mitotic division req for formation of n numbers of cells are

Answer 21

N-1

Question 22

Poison of prophase

Answer 22

Ribonuclease, azide, cynide

Question 23

Chalknes

Answer 23

Inhibit mitosis

Question 24

Phistone protein

Answer 24

S phase

Question 25

Most of organelle duplicate in (interphase

Answer 25

G1

Question 26

Increase in chromosome is first appeared in...... Stage

Answer 26

Anaphase

Question 27

Terminalisation of chaismata

Answer 27

Diakinesis

Question 28

Metaphase 1

Answer 28

Double metaphase plate is formed

Question 29

Reduction in number of chromosome occurs in

Answer 29

Anaphase 1

Question 30

In oocyte of some vertebrae,......... Can last for months are years

Answer 30

Diplotene

Question 31

Homologous chromosome begin to Seprate

Answer 31

Diplotene

Question 32

Amitosis

Answer 32

Direct cell division.. Remak

Question 33

Anastral

Answer 33

Plant.. Aster formation is absent

Question 34

Akmals a

Answer 34

Amphiastral

Question 35

Number of gene of mitosis for producing x cells is

Answer 35

2n