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  1. #1
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    Male maker x female banana?

    What normally happens if you breed a male maker banana to a female banana? Does the banana offspring still come out as males or does it normalize the ratio because of the genetics from the female?

  2. #2
    in evinco persecutus dr del's Avatar
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    Re: Male maker x female banana?

    The female will throw a normal sex ratio but ,iirc, any males produced will be female makers.

    7 adult Royals (2.5), 1.0 COS Pastel, 1.0 Enchi, 1.1 Lesser platty Royal python, 1.1 Black pastel Royal python, 0.1 Blue eyed leucistic ( Super lesser), 0.1 Piebald Royal python, 1.0 Sinaloan milk snake 1.0 crested gecko and 1 bad case of ETS. no wife, no surprise.

  3. #3
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    Re: Male maker x female banana?

    Short answer:
    The result is expected to be banana females, normal females, super banana males and male maker banana males in approximately equal numbers. Rarely a super banana female, normal male or female maker banana male shows up.

    Long answer:
    Xb = banana gene on X choromosome
    X+ = normal gene on X choromosome
    Yb = banana gene on Y choromosome
    Y+ = normal gene on Y choromosome

    Xb/Xb = super banana female
    Xb/X+ = banana female
    X+/X+ = normal female

    Xb/Yb = super banana male
    Xb/Y+ = banana male (female maker)
    X+/Yb = banana male (male maker)
    X+/Y+ = normal male

    Most of the time, a banana male (male maker) (X+/Yb) x banana female (Xb/X+) produces
    1/4 Xb/X+ = banana female
    1/4 X+/X+ = normal female
    1/4 Xb/Yb = super banana male
    1/4 X+/Yb = banana male (male maker)
    In the above list, the egg's chromosome is first, and the sperm's chromosome is second.

    Less than 10 percent of the sperm and eggs have a crossover. In sperm, the banana gene on the Y chromosome has switched to the X chromosome, and the normal gene on the X chromosome has switched to the Y chromosome. In eggs, there is no difference between crossovers and non-crossovers.

    Results from crossovers:
    1/4 Xb/Xb = super banana female
    1/4 X+/Xb = banana female
    1/4 Xb/Y+ = banana male (female maker)
    1/4 X+/Y+ = normal male
    In the above list, the egg's chromosome is first, and the sperm's chromosome is second.

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    dr del (07-23-2019)

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