Hey there! Sign in to join this conversationNew here? Join for free
    • Thread Starter
    Offline

    1
    ReputationRep:
    Assuming you have a cell in it with 6 chromosomes. Two pairs of 3.

    The question is:
    How many different types of gametes could be produced from this cell as a result of
    different combinations of maternal and paternal chromosomes?

    I don't seem to understand how to work it out :confused:
    I thought the answer is always 4, however it is 8 for some reason.

    The question is 5dii on
    http://filestore.aqa.org.uk/subjects...W-QP-JUN10.PDF

    Any help will be much appreciated :rolleyes:
    • Study Helper
    Offline

    2
    ReputationRep:
    Study Helper
    Posted from TSR Mobile
    Attached Images
     
    Offline

    2
    ReputationRep:
    I presume you mean 3 pairs of 2 chromosomes. The way to work it out is always 2 to the power of the haploid number. In this case the haploid number of chromosomes is 3 so it's 2 to the power of 3 = 8
    • Thread Starter
    Offline

    1
    ReputationRep:

    Thank you very much!
    I know how to work it out now! Although this way long can be quite confusing

    (Original post by burtondog)
    I presume you mean 3 pairs of 2 chromosomes. The way to work it out is always 2 to the power of the haploid number. In this case the haploid number of chromosomes is 3 so it's 2 to the power of 3 = 8
    So if there were 7 pairs of 2, would the answer be 2^7?

    And THANKS A LOT!
    • Study Helper
    Offline

    2
    ReputationRep:
    Study Helper
    Yeah, the formula's one more way to do it. I didn't think of that before, so I worked out an example.
 
 
 
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • Poll
    Brussels sprouts
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

    Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

    Quick reply
    Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.