Select Board & Class
i) What is synaptonemal complex?
ii) Explain the significance of crossing over with diagram. In which phase of cell division this process takes place?
multicellular organisms have division of labour? explain
what is a mesosome in prokaryotic cell? mention the function it performs.
What will be the amount of dna in meiosis II products if meiocyte contains 30 Pg DNA in G1 phase?
Draw the diagram of all five sub stages of prophase 1 of meiosis 1 and explain them.....pls give me these diagrams as soon as possible.....
what are sister and non sister chromatids???????
How many meiotic divisions are required to produce 1000 seeds(grain) of cyprus plant which is an expection to the division rule of ( n + n/4 ) ?
why interphase called resting phase?
HOW MANY MEIOTIC DIVISIONS ARE REQUIRED TO FORM 200 POLLEN GRAINS?
During pachytene stage of meiosis , the chromosomes appear ---
1)single stranded 2)4-stranded 3)6-stranded 4)8-stranded
what is the significance of mitosis and meiosis??
Can there be mitosis without DNA replication in S phase?
figure of different stages of meiosis
what is G0 phase of plant cell?
difference between sister and non-sister chromatids
At which stage of cell division the morphology of chromosomes can be distincly studied?
Give brief account of somatic cell division ?
what is the significance of mitosis and meiosis?
what is the difference b/w miosos and mitosis
Can you explain the full process of meiosis 1?
what is terminalization?
How the chromosome number is maintained in offspring?
are bivalent & tetrad the same thing?
Difference between chromosomes and chromatin?
what is centripetal and centrifugal manner?
plants dont have centrioles, so how are the spindle fibres formed for cell division? how can it divide without centriole? n if it can , why do animals need the centriole? What is its main function? arent spindle fibres formed by centriole? if nt then wer r they formed?
For cytological studies, chromosomes are taken from the mitotic metaphase. Why?
You have studied
what is anastral mitosis?
q.1what is the role of chromosomes in inheritance?
q2 what is genetic recombination?
q3 what is genetic mapping?
q4 what is diffrance between mitosis and meiosis?
q5 what is cell cycle and what's the function of cell cycle? please answer me as soon as it 's possible
List the main differences between mitosis and meiosis.
diferentiate between metaphase of mitosis metaphase 1 of meiosis?
how many meiotic divisions are necessary for the formation of 100 grains?? ans-125....please explain how??
what's synapse?with the help of diagram explain reflex action on knee jerk?
What is chiasmata? State its significance.
Resting Phase is the most active phase of cell cycle. Justify this statement!
What is DNA replication?
what will be the total number of mitotic divisions in the formation of 64 daughter cells
which structure of animal cell forms the asters of spindle?
Meiosis is known as reductional division, and it is also known as the basis of evolution. why is it so? Also, at the end of telophase 1 of meiosis 1, the chromosome number remains the same. why is it known as reductional division then?
cell division includes karyokinesis and cytokinesis. at what phase does the cytokinesis process BEGIN.?is it at the end of telophase, starting of telophase, end of prophase or starting of prophase?
Describe the following:
(a) synapsis (b) bivalent (c) chiasmata
Draw a diagram to illustrate your answer.
what is hemozygous?
what is kernplasma ratio?
what is chiasmata?? plz explain in simple words
WHICH STAGE OF CELL DIVISION YOU WILL SELECT TO STUDY THE MORPHOLOGY OF A CHROMOSOME AND WHY?
The point at which polytene chromosomes appear to be attached together is called what? n why?
enumerate the importance of mitosis and meiosis?
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Syllabus
i) What is synaptonemal complex?
ii) Explain the significance of crossing over with diagram. In which phase of cell division this process takes place?
If meiosis II products have 10 chromosomes and 20 picogram DNA, then what will be the number of chromosomes and DNA amount respectively in G2 phase of meiocyte?
(1) 20 and 40 Pg DNA (2) 40 and 80 Pg DNA
(3) 20 and 20 Pg DNA (4) 20 and 80 Pg DNA
And the answer is given (4). I cant understand the explanation given also:--
Answer (4) In normal meiocyte,, chromosome = 2n
DNA = 2C
G1 = 2n, 2C
S = 2n, 4C
G2 = 2n, 4C
After meiosis II,,n, 1C in each haploid cell
multicellular organisms have division of labour? explain
Chromosomal material condenses to form compact mitotic chromosomes. Chromosomes are seen to be composed of *chattached* together at the centromere.
Also, define the term *chattached*.
what is a mesosome in prokaryotic cell? mention the function it performs.
What will be the amount of dna in meiosis II products if meiocyte contains 30 Pg DNA in G1 phase?
Draw the diagram of all five sub stages of prophase 1 of meiosis 1 and explain them.....pls give me these diagrams as soon as possible.....
what are sister and non sister chromatids???????
(a) Prophase (b) Metaphase (c)Anaphase (d) Telophase
How many meiotic divisions are required to produce 1000 seeds(grain) of cyprus plant which is an expection to the division rule of ( n + n/4 ) ?
A) colchicine b) mustard gas and azides
C) cyanides d) all of these
why interphase called resting phase?
(a) Cytokinesis (b) Plasmotomy (c) Endomitosis (d) Dino-mitosis
HOW MANY MEIOTIC DIVISIONS ARE REQUIRED TO FORM 200 POLLEN GRAINS?
During pachytene stage of meiosis , the chromosomes appear ---
1)single stranded 2)4-stranded 3)6-stranded 4)8-stranded
what is the significance of mitosis and meiosis??
Can there be mitosis without DNA replication in S phase?
figure of different stages of meiosis
what is G0 phase of plant cell?
difference between sister and non-sister chromatids
At which stage of cell division the morphology of chromosomes can be distincly studied?
Give brief account of somatic cell division ?
(a) Animal (b) Hicher Plant (c) Fungi (d) Algae
what is the significance of mitosis and meiosis?
what is the difference b/w miosos and mitosis
Can you explain the full process of meiosis 1?
(1) first division is equational, second is reductional
(2) first division is reductional, and second is eqautional
(3) both the divisions are reductional
(4) both the divisions are equational
what is terminalization?
How the chromosome number is maintained in offspring?
are bivalent & tetrad the same thing?
Difference between chromosomes and chromatin?
what is centripetal and centrifugal manner?
plants dont have centrioles, so how are the spindle fibres formed for cell division? how can it divide without centriole? n if it can , why do animals need the centriole? What is its main function? arent spindle fibres formed by centriole? if nt then wer r they formed?
For cytological studies, chromosomes are taken from the mitotic metaphase. Why?
You have studied
(a) Terminalisation (b) Diakinesis (c) Interkinesis (d) Heteropycnosis
what is anastral mitosis?
q.1what is the role of chromosomes in inheritance?
q2 what is genetic recombination?
q3 what is genetic mapping?
q4 what is diffrance between mitosis and meiosis?
q5 what is cell cycle and what's the function of cell cycle? please answer me as soon as it 's possible
List the main differences between mitosis and meiosis.
(a) Mitisis (b) Meiosis (c) Amitosis (d) Endomitosis
diferentiate between metaphase of mitosis metaphase 1 of meiosis?
how many meiotic divisions are necessary for the formation of 100 grains?? ans-125....please explain how??
what's synapse?with the help of diagram explain reflex action on knee jerk?
What is chiasmata? State its significance.
Resting Phase is the most active phase of cell cycle. Justify this statement!
What is DNA replication?
what will be the total number of mitotic divisions in the formation of 64 daughter cells
which structure of animal cell forms the asters of spindle?
Meiosis is known as reductional division, and it is also known as the basis of evolution. why is it so? Also, at the end of telophase 1 of meiosis 1, the chromosome number remains the same. why is it known as reductional division then?
cell division includes karyokinesis and cytokinesis. at what phase does the cytokinesis process BEGIN.?is it at the end of telophase, starting of telophase, end of prophase or starting of prophase?
Describe the following:
(a) synapsis (b) bivalent (c) chiasmata
Draw a diagram to illustrate your answer.
what is hemozygous?
what is kernplasma ratio?
(a) Giant chromosome (b) Acentric chromosome (c) Polycentric chromosome (d) Telocentric chromosome
what is chiasmata?? plz explain in simple words
WHICH STAGE OF CELL DIVISION YOU WILL SELECT TO STUDY THE MORPHOLOGY OF A CHROMOSOME AND WHY?
The point at which polytene chromosomes appear to be attached together is called what? n why?
(a) Anaphase (b) Late metaphase (c) Early Metaphase (d) Late Prophase
enumerate the importance of mitosis and meiosis?