MCAT Question of the Day
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    Q:

    		 Aneuploidy is the presence of an abnormal number of chromosomes in a cell. Monosomy is a "subtractive" form of aneuploidy due to the presence of only one chromosome from a pair while trisomy is an "additive" form where there are three instances of a particular chromosome, instead of the normal two. A strawberry plant is normally diploid, but a monosomic strawberry plant was observed with 13 chromosomes in its cells. Which of the following is NOT a correct possibility regarding the chromosomal material of a strawberry plant?

    		 

    A

    		 A trisomic strawberry plant would have 21 chromosomes in its cells

    B

    		 A trisomic strawberry plant would have 15 chromosomes in its cells

    C

    		 Tripling the chromosomal number found in the normal diploid state would result in a strawberry plant with 21 chromosomes in its cells

    D

    		 During meiosis, the chromosomal number is halved during the first meiotic division, yielding 7 chromosomes



    Mitosis and Meiosis |
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