Multiple choice Q15 (1 Viewer)

[lauren_carter27]

I stuffed it methinks.

 

[lauren_carter27]

I put D coz it said crossing over between homologous chromosomes, and I thought they were identical, so if they swap over bits, it wouldn't be any different gentically??????

 

[~*HSC 4 life*~]

its b

.

 

[kimmeh]

I said B too

 

[SweetSeasons]

said sex linkage also.

Gametes are sex cells like ova and sperm. hence, mutaion, assortment of alleles and crossing over can all influence genetic variability.

 

[the_13th_falcon]

All the question is asking is which of the four is not a source of variation. Sex linkage actually limits variation. The other three provide variation. B!

 

[Sophie777]

what was b? Sex linkage?

 

[PookieMonster]

I stuffed it methinks.

hay sexy biarch howzit going. i think we should do potters friday

 

[lukebennett]

im sorry but homologous chromosomes are similar in structure and conten but i dont think they are identical in genetic make up

 

[kow_dude]

it's sex-linked... i asked my teacher

 

[phrred]

crossing over occurs in homologous chromosome in the X regions
it was sex linkage coz it doesnt create variation at all

 

[Tommy_Lamp]

I used the cancellation method and came out with B. I think the trick was that people would of seen gametic cells, thought sex-cells and assumed sex-linkage was not the answer

 

[euphoric]

oh no >< i put D...