If the genotype of the nonrecombinant progeny of a three-point testcross is A B C and the genotype of the double-crossover progeny is a B C, which gene is likely in the middle of the three loci?

Gene A

Explanation:

If the three points test cross genotype A B C is crossed withe the double crossover progeny BC, the resulting gene will have A at the centre of the three loci

the correct answer is anaphylaxis.

anaphylaxis is a condition caused by insect bites, foods, medications, manifested by tongue swelling, shortness of breath, vomiting, low blood pressure. it sometimes may occur without an obvious reason. it is treated with epinephrine injection.other tretments include antihistamines and steroids,

1) a

2)c

3)a

4)c

5)b

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