If pink snapdragons of the f1 hybrids (rw) are crossed with red snapdragons of the parent plant (rr), what will be the ratio of flowers produced in 40 offspring?

a. 30 pink flowers, 10 red flowers
b. 20 pink flowers, 20 red flowers
c. 10 pink flowers, 30 white flowers

What are the fixed alleles in the human species? o a. the alleles that are on the most chromosomes b. the alleles that change most often 000 c. the alleles that no one has d. the alleles that everyone has

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.

Drag each label to the correct location on the chart. match the function to the type of tissue