Biology 251 - Genetics » Spring 2021 » Topic 3.3 Quiz

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Question #1
If we self-pollinate a plant with the genotype RrggWw, we would use ________ to calculate the chances of getting offspring that are heterozygous recessive for all 3 genes.
A.   sum law
B.   chi-squared
C.   Mendel's first law
D.   Mendel's second law
E.   product law
Question #2
If we self-pollinate a plant with the genotype RrggWw, we would use ________ to calculate the chances of getting offspring getting offspring homozygous for the R locus or for the W locus.
A.   product law
B.   Mendel's 1st law
C.   Mendel's second law
D.   sum law
E.   chi-squared
Question #3
An alternative method of predicting genotypes and phenotypes to the Punnett square, which can be expanded to more than two genes is:
A.   test cross.
B.   dihybrid cross.
C.   chi-squared test.
D.   a branch diagram.
Question #4
In determining the chi-squared value, the probability of difference occuring due to chance is dependent on the:
A.   probability of freedom.
B.   dominant genotype.
C.   degrees of fitness.
D.   degrees of freedom.
Question #5
In a chi-squared test in which the P value is between 0.9 and 0.5, :
A.   the null hypothesis would be accepted and differences are due to chance.
B.   the outcome of the chi-squared analysis doesn't allow determination of the probability that differences between observed and expected phenotypes is due to chance.
C.   the null hypothesis would be rejected and differences are not due to chance.
D.   the null hypothesis would fail to be accepted and differences are not due to chance.

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