The variance petal length in the parental strains is 0.22 cm2, and the variance in the f1 plants is 0.22 cm2. which of the following is the most plausible estimate of phenotype variance in the petals of the f2 flowers?

a. 0.33 cm2
b. 0.21 cm2
c. 0.15 cm2

The image shows embryos of three vertebrate classes

Aresearcher created three groups based on participants bmi: normal weight, overweight and obese. the hypothesis being tested is that the three groups differ in the mean number of artificially sweetened drinks consumed weekly. which statistical test might the researcher use, assuming a reasonably normal distribution of values.

Why do you suppose the structural polysaccharide cellulose does not contain branches?