2
$\begingroup$

This question already has an answer here:

This has perpetually confused me. Is our genome made up of two long strands, each strand made up of 23 continuous chromosomes that bind together, or are they 23 free floating separate pair of chromosomes? I think it's the latter because I just learn that genes on different chromosomes assort independently, which would be hard if the genome was a long string, but I'm still not sure.

$\endgroup$

marked as duplicate by James, WYSIWYG Oct 12 '16 at 10:43

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • $\begingroup$ Each chromosomes are separate clusters. $\endgroup$ – Always Confused Oct 12 '16 at 5:08
-1
$\begingroup$

DNA does not run from one chromosome into another.

I think it's the latter because I just learn that genes on different chromosomes assort independently, which would be hard if the genome was a long string, but I'm still not sure.

Though chromosomes are NOT connected by DNA, your gene access argument is, furthermore, not a great argument. It would just be one tiny strand of DNA between two very-much larger chromosomes. The nucleus is able to operate with much tighter/difficult problems with respect to accessing DNA.

I'm glad you're thinking of it physically though ! Chromosomes are indeed kept track of and connected by nuclear-cytoskeletal stuff.

$\endgroup$
-1
$\begingroup$

According to what I've learnt, we have 23 independent pairs of chromosomes. Each of them contains 2 chromosomes and different kinds of genes. The genes are connected in one strand. So it is the latter one. And the 23rd pair of chromosome is used to determine our gender actually. Females got XX and males got XY

$\endgroup$
  • 1
    $\begingroup$ Not quite. Humans have 23 pair of chromosomes. That means 46 independent entities. Except for guys, we're one short. $\endgroup$ – bpedit Oct 12 '16 at 5:43
  • 1
    $\begingroup$ @bpedit Actually, males have 46 chromosomes as well. The 23rd pair is X and Y. While the Y chromosome is much smaller than the X, it is still a full chromosome. Not sure where you got the "we're one short" idea... $\endgroup$ – MattDMo Oct 12 '16 at 18:20
  • $\begingroup$ @MattDMo Ouch! You're correct. Am deleting comment. Suspect this is age related. $\endgroup$ – bpedit Oct 12 '16 at 19:17

Not the answer you're looking for? Browse other questions tagged or ask your own question.