A quick chromosomes question???

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lil_wend
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A quick chromosomes question???

Post by lil_wend » Mon Nov 06, 2006 8:31 pm

If there are 13 pairs of homologous chromosomes in a primary spermatocyte, how many chromosomes are there in a sperm?
I am a little confused by this question....Forgive my ignorance, but any help would be greatly appreciated.

sdekivit
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Post by sdekivit » Mon Nov 06, 2006 8:53 pm

that's impossible, since the primary spermatocyt is diploid. This would imply the sperm cells would have 6 1/2 chromosomes.

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Post by lil_wend » Tue Nov 07, 2006 1:22 am

It was an actual question in my lab book, it was a review question. I was really confused. Thanks for the information. I will check with my teacher and see what she says.

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Post by KewlGal111 » Tue Nov 07, 2006 2:01 am

What Happens to Chromosomes before Mitosis begins ?

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asutoshsahu
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Post by asutoshsahu » Tue Nov 07, 2006 9:01 am

The primary spermatocyte contains 13 pairs (=26 chromosomes) this will form secondary spermatocyte by meiosis.
Before meiosis its DNA content will be doubled and after meiosis it will prduce four haploid sperms which will contain 13 chromosomes (not pairs) each

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Post by sdekivit » Tue Nov 07, 2006 3:36 pm

:oops: pairs :oops:

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Post by imraan47 » Thu Nov 09, 2006 5:38 am

sdekivit wrote:that's impossible, since the primary spermatocyt is diploid. This would imply the sperm cells would have 6 1/2 chromosomes.


how does it even make sence to have 6 and a half chromosome? lol

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sachin
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Post by sachin » Thu Nov 09, 2006 5:42 am

:lol: One chromosome left it's tail behind. :shock:
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