The expected ratio of phenotypes among the progeny of a test cross is 1:1:1:1. Out of 200 total resulting progeny, 48 occur in one of the four phenotypic classes. Given this information, which of the following must also be true?a)At least one additional cell must also contain a count of 48.b)The progeny of this cross do not conform to a 1:1:1:1ratio.c)The value of observed - expected for this cell = -2.d)Since 48 is so close to the expected value, there is no need to calculate chi square before drawing a conclusion about the ratio.

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Asked Jan 31, 2020
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The expected ratio of phenotypes among the progeny of a test cross is 1:1:1:1. Out of 200 total resulting progeny, 48 occur in one of the four phenotypic classes. Given this information, which of the following must also be true?

a)At least one additional cell must also contain a count of 48.
b)The progeny of this cross do not conform to a 1:1:1:1ratio.
c)The value of observed - expected for this cell = -2.
d)Since 48 is so close to the expected value, there is no need to calculate chi square before drawing a conclusion about the ratio.
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A test cross in genetics refers to the crossing or breeding of an individual with the individual having recessive traits. This cross is used to determine the zygosity of the individual which is crossed with the recessive individual. In case of ...

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