OMG PLEASE HELP.. QUESTIONS FOR FINAL...

[dessy2591]

Hey ummm if you could please help me answer some questions so i can study for my final and not fail.. umm there 20 questions so if anyone can help me please cause i have no idea what the answers are... PLEASE PLEASE PLEASE help me. Thank you so much

[dessy2591]

ummm heres the first question...
1)k it shows a picture of this x thing..and asks..
refer to the illustration above. identify the structure in the diagram and discuss its importance during eukaryatic cell division...

anyone know??

[sachin]

Unable to ndeerstand..........

[dessy2591]

haha ummm sorry.. can i ask you a different question??

[dessy2591]

ok next question

Explain why crossing-over is am important source of genetic variation.

[sachin]

crossing over is a process in which DNA fragments are exchange btween homologus chromosome.
in meiosisI.
Thus genetic infomation is exchanged and mixed with new genetic information and that causes variation in next generation.

[dessy2591]

Thanks... k next

Why hypotheses did Gregor Mendel develop based on his observations of pea plants?

[sachin]

ummm heres the first question...
1)k it shows a picture of this x thing..and asks..
refer to the illustration above. identify the structure in the diagram and discuss its importance during eukaryatic cell division...

anyone know??

X is chromosome with it's sister chromatid and that occurs due to DNA replication before cell division. And it helps in keeping chromosomal number constant in daughter cell....

I got it

[sachin]

Thanks... k next

Why hypotheses did Gregor Mendel develop based on his observations of pea plants?

beacause all the results of selfing and hybridisation experiments were relative to each other thats why.....

[dessy2591]

haha thanks.. do you have msn??

[sachin]

No I don't...
But have Yahoo.....

[dessy2591]

dang.. ok nm.. umm do you know the last question i put up??