Clouded leopards are a medium sized, endangered species of cat, living in the ve

Question

Clouded leopards are a medium sized, endangered species of cat, living in the very wet cloud forests of Central America. Assume that the normal spots (x) are a dominant, sex-linked trait and that dark spots (x") are the recessive trait. Suppose as a conservation biologist, you are involved in a clouded leopard breeding program. One vear you cross a male with dark spots and a female with normal spots The female has four cubs (two male and two female).One each of the male and female cubs have normal spots and one each have dark spots Given the offspring produced, what is the Renotype of the mother? (circle one): x"x" Show your Punnett Square (1 generation) Suppose, a few years later, you breed some of the offspring together (cubs from the first generation). You cross the female cub (from above] that has normal spots with the male that also has normal spots. Show your Punnett Square (2d generationl How many cubs of each genotype will there be (assume 4 total cubs)? xxN. How many of the cubs from this latest cross will have dark spots? What sex will the cubs with dark spots be? xNY: XY:

Explanation / Answer

XN(Dominant) - Normal spots.
Xn(Recessive) - Dark spots.
Genotype of male with dark spot - XnY.
Genotype of female with normal spots - XNXN or XNXn.

Cross XnY X XNXn

Gametes formed Xn and Y XN and Xn

Next generation

Then, the genotype of mother - XNXn.

2nd generation:

Cross XNXn X XNY

Gametes formed XN and Xn XN and Y

Next generation   

The cubs are present in this generation - XNXN, XNXn, XNY and XnY.

The number of cubs with dark spots = 1.

The sex will the cubs with dark spots be - Male.

Male/Female Xn Y XN XNXn(normal spot female) XNY(normal spot male) Xn XnXn(dark spot female) XnY(dark spot male)

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