Which best describes a recessive allele?
1.always inherited from a parent when a dominant allele is inherited from the other parent
2.never inherited from a parent when a dominant allele is inherited from the other parent
3.only determines phenotype when a dominant allele for the same trait is present
4.does not determine phenotype when a dominant allele for the same trait is present

What two fields of study provide the core information that is used to classify organisms?

Aresearcher designed an investigation to test what effect eating different types of food would have on blood insulin levels. she selected 10 male subjects who were all 25 years of age and in good health. the experiment took place over 3 days. at 8: 00 a. m. on each day, the subjects ate a meal consisting of only 1 type of food. they had their blood insulin levels measured after consuming the meal. on day 1 they ate a high fat diet, on day 2 they ate a high protein diet, and on day 3 they ate a high sugar diel what is the independent variable in this experiment? a the age of the subjects b the blood insulin level c the type of food consumed d the time of day the meal was consumed

Earthquakes a. created the rock in arches utah b. can be caused by volcanic eruptions c. are caused by tsunami waves d. wear mountains down into hills