Explain why the gametes have only one allele for a trait

A scientist is tracking an object orbiting the Sun that is found between Mars and Jupiter. Which additional feature can be used to determine the object is an asteroid?

A male adolescent asks the nurse, "how will i know if i'm going through puberty?" the nurse discusses physical changes that usually occur, the first change being:

Which two characteristics describe all animals? A. multicellular and symmetrical B. multicellular and asymmetrical C. heterotrophic and multicellular D. heterotrophic and unicellular

Name two types of lipids

How is the structure of a virus different from the structure of a prokaryotic cell?

Which of the following are included in the binomial name given to an organism? a. Kingdom, Family b. Species, Family c. Order, Genus d. Genus, Species

Who is known as "the father of medicine"?

What lipids make up the cell membrane? how many layers does it hare? what are the functions of the cell membrane?

What cells photosynthesise the most

Describe the role of lymphocytes antibodies and antigens in the body's immune system