Why is secondary spermatocyte a haploid cell?

  • Thread starter Thread starter sameeralord
  • Start date Start date
  • Tags Tags
    Cell
AI Thread Summary
The discussion centers on the classification of chromosomes and cells during spermatogenesis. It clarifies that despite having double-structured chromosomes (consisting of chromatids), cells like secondary spermatocytes are still considered haploid because they contain one copy of each chromosome. The maturity of cells, such as spermatids, does not affect their haploid status; they are classified as haploid regardless of their developmental stage. The term "double structured" refers to the presence of chromatids, which is a common feature during meiosis and mitosis, but can also be observed in cells undergoing spermatogenesis.
sameeralord
Messages
659
Reaction score
3
Hello everyone,

Ok I know it has 23 chromosomes. But they are double structured chromosomes, so can you still call them haploid. Also spermatids, can you call them haploid cells. You can't right because they haven't matured.
 
Biology news on Phys.org
What do you mean by "double structured"? Whether or not cells have matured doesn't matter, if they have 1 copy of each chromosome that makes them haploid, per definition.
 
Jack the Stri said:
What do you mean by "double structured"? Whether or not cells have matured doesn't matter, if they have 1 copy of each chromosome that makes them haploid, per definition.

[PLAIN]http://upload.wikimedia.org/wikipedia/commons/thumb/9/9a/Meiosis_Overview.svg/300px-

Daugher nuclei, here is a secondary spermatocyte, if you consider this as spermatogenesis. They are double structured chromosmes (consisting of chromatids). I know every chromosme has chromatids when they undergo meiosis and mitosis, but these cells have them even without undergoing it. Well they are undergoing but you see what I mean. I'm not saying you are wrong.
 
Last edited by a moderator:

Thread 'Chagas disease now established in US'

Chagas disease, long considered only a threat abroad, is established in California and the Southern U.S. According to articles in the Los Angeles Times, "Chagas disease, long considered only a threat abroad, is established in California and the Southern U.S.", and "Kissing bugs bring deadly disease to California". LA Times requires a subscription. Related article -...
View full post »

Thread 'I need help understanding this quote about recent Natural Selection'

I am reading Nicholas Wade's book A Troublesome Inheritance. Please let's not make this thread a critique about the merits or demerits of the book. This thread is my attempt to understanding the evidence that Natural Selection in the human genome was recent and regional. On Page 103 of A Troublesome Inheritance, Wade writes the following: "The regional nature of selection was first made evident in a genomewide scan undertaken by Jonathan Pritchard, a population geneticist at the...
View full post »

Similar threads

What fraction of genes do we share with relatives and with other species?
Replies
12
Views
4K
What is the role of the promoter in cell ablation studies?
Replies
6
Views
3K
Are Invasive Crayfish in Europe the Result of Parthenogenesis?
Replies
6
Views
2K
Totipotent Stem Cell From Molecular Components
Replies
8
Views
4K
How many DNA strands does a chromosome have?
Replies
1
Views
38K
Medical Can cell phones really cause health problems?
Replies
16
Views
3K
Alternative ideas for stem cells.
Replies
6
Views
3K
Proving that the teacher is wrong
Replies
16
Views
3K
Epothilone B study connected to 'Hard Problem of Consciousness' Model
Replies
5
Views
2K
Human body growth in the absence of a brain
Replies
4
Views
2K

Hot Threads

Recent Insights

Back
Top