Biology past paper problem.

[Xanthe]

I've searched and searched but I couldn't find the mark scheme for MJ 2003, paper 2 (Theory).
Therefore, I would appreciate it very much if you check the third question and help me check my answers, mainly 3(b). Very urgent!

 

[CaptainDanger]

Use the examiner report available : 5090_s03_er.pdf

 

[Xanthe]

I did check it; it didn't help me. That's why I am asking for help.

 

[ZohaibAsad]

a) X is the bigger one Y is the smaller one

b) Human Male XY Human Female XX

For the chicken part the question says 'suggest' rather than 'identify' which was used for the human chromosomes. So, there goes the hint, use new letters to label the chicken chromosomes

Male Chicken: ZZ Female: ZW

 

[Xanthe]

Thank you a lot,

a) X is the bigger one Y is the smaller one

b) Human Male XY Human Female XX

For the chicken part the question says 'suggest' rather than 'identify' which was used for the human chromosomes. So, there goes the hint, use new letters to label the chicken chromosomes

Male Chicken: ZZ Female: ZW

Thank you very much. My main issue was with the chicken chromosomes and I guess that you solved it for me.