A biologist is studying the genetics of a particular species of plant. He knows that one plant may contain hundreds of individual seeds, each of which is the result of a separate fertilization event. He determines that seed shape is controlled by a single gene with two alleles. The dominant allele results in round seeds, and the recessive allele results in wrinkled seeds

Which class of molecules contains the amino group, nh2 (a) sugars (b) water (c) proteins (d) hydrocarbons

Researchers randomly divide participants into groups. each group takes a different amount of omega-3 fatty acid supplements daily for a month. one group receives a placebo. the researchers measure the impact on cholesterol levels in the blood. what is the purpose of random assignment in this experiment? a, to produce treatment groups with similar characteristics b, to ensure that all people with high cholesterol have an equal chance of being selected for the study c, to increase the accuracy of the research results and prevent skewness in the data

How does natural selection change thephenotypes within a population over time?