Mark received one dominant allele for brown hair from his father and another dominant allele from his mother.

Which word describes his genotype?

A blonde

B heterozygous

Chomozygous

D brown

Describe the components that make up the cell membrane, and explain why it is called the fluid mosaic model.

The occurrence of withdrawal symptoms signals that the body has adjusted to the presence of the drug. indicates that substance abuse has developed. is seen when use of any psychoactive substance is terminated.

Name three substances organisms can be trapped in and eventually result in a fossil.

Explain when changes in dna do and don't affect phenotypes

What does consumer mean

Using streamlined shapes in designing aircrafts

Which of the following statements about a compound is true? Only the physical properties of a compound are usually the same as those of the elements from which it is formed.

Students are reviewing the structure of DNA in preparation for a class test tomorrow. They demonstrate understanding of this information when they identify which of the following as a nitrogenous base found in DNA? Select all that apply.

Which organisms are prokaryotes a. Archaea b. Fungi c. Protist d. Plants

A population of lizards that originally had no predators lived on a small isolated island. Predators of the lizards were accidently introduced to the island from a visiting ship.