Dr. Portillo is conducting a study in order to test a causal hypothesis. What type of study must she conduct?

Option A

Explanation:

Complete question

Dr. Portillo is conducting a study in order to test a causal hypothesis. What type of study must she conduct?

a. an experiment

b. a case study

c. a survery

d. a naturalistic observation

Solution

Hypothesis testing is an statistical analysis that involves testing a sample data to assure the plausibility of the null hypothesis.

After a hypothesis is stated, the next step is to prepare an analysis plan. After the plan is set, experiment methodology must be framed and executed. Once the result of experiment is obtained, it must be validated and hence cross checked with null hypothesis to either accept it or reject it.

Hence, option A is correct

this is true, assuming that the allele is completely recessive and incomplete dominance is not a factor.

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).