Check your understanding In dogs, black coat color (B) is dominant to yellow coat color (b), and straight fur (C) is dominant to

Question

Check your understanding
In dogs, black coat color (B) is dominant to yellow coat color (b), and straight
fur (C) is dominant to curly fur (c). The coat color gene and the fur texture gene
are on different chromosomes, so they assort independently, and are not sex
linked
In a cross between two BbCc parents, predict the fraction of offspring with
black coat color and straight fur.
Choose 1 answer:
1/16
9/16
15/16
Hint

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Emery 3 months 2022-02-21T18:34:26+00:00 1 Answer 0 views 0

Answers ( )

    0
    2022-02-21T18:36:23+00:00

    The fraction of offspring with black coat color and straight fur is 9/16.

    Explanation:

    Information given:

    black coat colour and straight fur – dominant genotype BBCC, BbCc

    yellow coat colour and curly fur – recessive genotype  bbcc

    Both the traits are independently assorted. The fur colour and fur type is not present on the same chromosome and are not sex linked.

    The genotype of the parents are:

    BbCc X BbCc

    Punnet square shows:

              BC           Bc          bC        bc

    BC  BBCC   BBCc        BbCC   BbCc

    Bc  BBCc   BBcc          BbCc    Bbcc

    bC BbCC    BbCc         bbCC   bbCc

    bc  BbCc      Bbcc         bbCc    bbcc

    9 BLACK STRAIGHT

     3 BLACK CURLY

     3 YELLOW STRAIGHT

      1  YELLOW CURLY

    9/16 is the fraction of progeny to be black coat colour and straight fur.

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45:5+15-5:5+20+17*12-15 = ? ( )