help with this question

[dent02]

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what is the number of chromosomes at the end of meiosis and mitosis?

mitosis:
2 daughter cells(2n)=46

meiosis:
4 daughter cells-is it 4n=4x23?

I am not sure for meiosis is 4x23 correct.
pls correct me ...........................

number of chromososmes present at the end of telophase?

 

[dent02]

what is the number of chromosomes at the end of meiosis and mitosis?

mitosis:
2 daughter cells(2n)=46

meiosis:
4 daughter cells-is it 4n=4x23?

I am not sure for meiosis is 4x23 correct.
pls correct me ...........................

number of chromososmes present at the end of telophase?

Some one pls reply..............................

 

[rakhi]

somatic cell:
In mitosis 2 daughter cells are produced,and in each cell 2n chromosomes are present ,ie 2x23 in humans=46 chromosomes in one cell

gamates:
In meiosis 4 daughter cells are produced but the no.of chromosomes in a cell is 1n,ie 23 chromosomes

but i dont know whether we have to add up chromosomes from each daughter cells.i think it depends on how the question is asked...and also in females only one egg cell is formed as other three are polar bodies which will degenerate.

so i think we should answer it as 46 chromosomes [2n] after mitosis and 23 chromosomes after meiosis[1n]

please correct me.

 

[dent02]

somatic cell:
In mitosis 2 daughter cells are produced,and in each cell 2n chromosomes are present ,ie 2x23 in humans=46 chromosomes in one cell

gamates:
In meiosis 4 daughter cells are produced but the no.of chromosomes in a cell is 1n,ie 23 chromosomes

but i dont know whether we have to add up chromosomes from each daughter cells.i think it depends on how the question is asked...and also in females only one egg cell is formed as other three are polar bodies which will degenerate.

so i think we should answer it as 46 chromosomes [2n] after mitosis and 23 chromosomes after meiosis[1n]

please correct me.

thank you !!!

 

[dent02]

thank you !!!

pls answer.

each of the following is found in the posterior mediatinum except one
a.vagus nerve-sup.mediastinum
b.phrenic nerve-middle mediatinum
c.thoracic duct-post.mediatinum
d.greater splanchnic nerve-post.mediastinum
e.sympathetic ganglia-post.mediatinum

So which is the answer? pls correct me

 

[rakhi]

i think itz (b)Phrenic nerve

please correct me....

 

[mekha]

ur right

 

[dent02]

ur right

y not vagus,it is in superior mediatinum.pls explain

 

[rakhi]

some of the structures in superior mediastinum are also present in posterior mediastinum which also include vagus nerve.

This is what i read in Gray's anatomy:

The Posterior Mediastinum is an irregular triangular space running parallel with the vertebral column; it is bounded in front by the pericardium above, and by the posterior surface of the diaphragm below, behind by the vertebral column from the lower border of the fourth to the twelfth thoracic vertebra, and on either side by the mediastinal pleura. It contains the thoracic part of the descending aorta, the azygos and the two hemiazygos veins, the vagus and splanchnic nerves, the esophagus, the thoracic duct, and some lymph glands.

hope this helps.

 

[dent02]

some of the structures in superior mediastinum are also present in posterior mediastinum which also include vagus nerve.

This is what i read in Gray's anatomy:

The Posterior Mediastinum is an irregular triangular space running parallel with the vertebral column; it is bounded in front by the pericardium above, and by the posterior surface of the diaphragm below, behind by the vertebral column from the lower border of the fourth to the twelfth thoracic vertebra, and on either side by the mediastinal pleura. It contains the thoracic part of the descending aorta, the azygos and the two hemiazygos veins, the vagus and splanchnic nerves, the esophagus, the thoracic duct, and some lymph glands.

hope this helps.

thank you very much!

 

[Blue_eyes]

Ur perfectly right

somatic cell:
In mitosis 2 daughter cells are produced,and in each cell 2n chromosomes are present ,ie 2x23 in humans=46 chromosomes in one cell

gamates:
In meiosis 4 daughter cells are produced but the no.of chromosomes in a cell is 1n,ie 23 chromosomes

but i dont know whether we have to add up chromosomes from each daughter cells.i think it depends on how the question is asked...and also in females only one egg cell is formed as other three are polar bodies which will degenerate.

so i think we should answer it as 46 chromosomes [2n] after mitosis and 23 chromosomes after meiosis[1n]

please correct me.

 

[rakhi]

Thanks Mekha and Blue eyes. 🙂

 

[dent02]

Pls help with the following questions:

1.smallest cusp of mandibular 1M

a.MF
b.ML
c.DF
d.DL

ans.c

2.from facial view ,distal outline of crown of Mn.canine from cantact area to cervical line

a.convex
b.concave
c.irregular
d.straight

ans.a

3.which of the following describes the depth of curvature of cervical line on mesial surface of 13

a.greater that on mesial of 6
b.less than that on mesial of 11
c.same as mesial of 6
d.same as mesisal of 11
e.greater than that on mesial of 5

ans.b


1999.Q.132
ans. imbrication lines

1999.Q.144
ans.cervical

1999 Q.151
ans.distal of II(not sure)

1999.Q.153
ans.much greater f-l dimension(not sure)

1999 Q156
ans.mesialof 3

1999 Q.158
ans.shortest incisal slope to viewrs right.

1999 Q.164
ans.masial marginal

1999 Q.181
ans.genioglosus

pls correct me..............................

 

[dent02]

2000 Q.106
ans.dilaceration?

2000 Q.115
ans.dentin

2000 Q.125
ans.man.11 pm

2000 q.127
ans.disto-occlusal slope longer than mesio-occlusal slope.

2000 q.130
ANS.cAPSULAR LIGAMENTS

2000 q.132
ans.three occlusal fossa

2000 q.137
ans.mutually protected occlusion

2000.q.139
ans.dilaceration?

2000 q.144
ans.dens in dente?

2000 q.146
ans.short root trunk or indistinct facial development groove separating two facial cusps.

2000 q.149
ans.four

2000 q.151
ans???

2000.q.155
ans.inclines facially

2000 q.162
ans.depressors

2000 q.175
ans.mandibular incisors

2000 q.176
ans.mn PM

2000 q.183
ans.either inferior to articular tubercle or anterior to it.

2000.q.189
ans.d??

2000.q.193
ans.mesial marginal

2000 q.199
ans.distofacial

Someone pls answer these questions.Sorry no time to type the question.

 

[ridge]

hi i will ans ur questions,actually they are so much so can u wait for one more day?
i will try to ans ur questions soon.

 

[dent02]

hi i will ans ur questions,actually they are so much so can u wait for one more day?
i will try to ans ur questions soon.

Yes i can wait for one day

 

[ridge]

check ur pm

 

[ridge]

check ur pm

 

[dent02]

thank you ridge!

 

[dent02]

when viewed sagitally,which teeth have their long axes at an angle leat perpendicular to occlusal plane.
a.mx.incisors
b.mn.canines
c.mn pm
d.mx.pm
e.mn.I m

ans.a or e?

in primary molars which portion of crown is shorter occlusogingivally.
a.mesial
b.distal
c.midfacial
d.midlingual

ans.distal?

on the crown of mn I m ,the facial cusp ridge of ML cusp originates at cusp tip and terminates at which of the following

a.lingual groove
b.halfway down the facial surface
c.halfway down lingual surface
d.mesial portion of central groove
e.mesiolinguo-occlusal point angle area

ans.?

contact area most nearly circular is located on crown of which of the max.PM

a.mesial of 1
b.distal of 1
c.mesial of second
d.distal of second

confused c or d?

pls answer!

 

[dent02]

someone pls reply

 

[dent02]

someone pls help with these questions........................................

 

[reet]

hi dent02
1 when viewed sagitally,which teeth have their long axes at an angle leat perpendicular to occlusal plane.
a.mx.incisors
b.mn.canines
c.mn pm
d.mx.pm
e.mn.I m

ans.e?

2 in primary molars which portion of crown is shorter occlusogingivally.
a.mesial
b.distal
c.midfacial
d.midlingual

ans.distal?

3 on the crown of mn I m ,the facial cusp ridge of ML cusp originates at cusp tip and terminates at which of the following

a.lingual groove
b.halfway down the facial surface
c.halfway down lingual surface
d.mesial portion of central groove
e.mesiolinguo-occlusal point angle area

ans d
correct me if i am wrong
reet

 

[fido!]

hello dent02,
ans to ur qs r as follows......
1.a
2.b
3.d
4.not sure,but can find out!
tc
prady!

when viewed sagitally,which teeth have their long axes at an angle leat perpendicular to occlusal plane.
a.mx.incisors
b.mn.canines
c.mn pm
d.mx.pm
e.mn.I m

ans.a or e?

in primary molars which portion of crown is shorter occlusogingivally.
a.mesial
b.distal
c.midfacial
d.midlingual

ans.distal?

on the crown of mn I m ,the facial cusp ridge of ML cusp originates at cusp tip and terminates at which of the following

a.lingual groove
b.halfway down the facial surface
c.halfway down lingual surface
d.mesial portion of central groove
e.mesiolinguo-occlusal point angle area

ans.?

contact area most nearly circular is located on crown of which of the max.PM

a.mesial of 1
b.distal of 1
c.mesial of second
d.distal of second

confused c or d?

pls answer!

 

[dent02]

Thank you prady and reet.

pls let me know the answer for the 4th question.

 

[reet]

Thank you prady and reet.

pls let me know the answer for the 4th question.

sorry ans for 1 is a