Which two main factors work together to affect an organism's phenotype?

A) genes and the environment

B) mutations and migration

C) mutations and breeding

D) artificial and natural selection

Which is an example of genetic drift? O A. Disruptive selection divides a population into two new species. O B. The allele frequency of a population changes due to a bottleneck effect. O C. Selective breeding creates a new species of dog. O D.

What structural advantage is provided to stems that have theirvascular tissue arranged in a ring near the periphery of thestem?

The water at the top of the water fall has ___ energy a. Potential b. kinetic c. heat d. Metabolic

A caregiver asks the nurse what the caregiver can give a 9-year-old child for a headache. what is the nurse's best response?

Explain why scientists use the metric system for scientific measurements.

Which of the following is an example of a cultural control of pests? using natural pest predators using pest hormones using synthetic pesticides keeping homes clean

Why do microbiologists often disinfect work areas before working with bacterial cultures?

According to the animation, to what genetic element does the rna polymerase bind? according to the animation, to what genetic element does the rna polymerase bind? the operator the repressor mrna the repressor protei

Is Pinocytosis a form of passive transport?

If part of the xylem of a young oak tree is destroyed, which of the following functions would it interfere with most? A) conduction of water to the leaves B) conduction of carbohydrates to the roots C) absorption of carbon dioxide from air