Except for identical twins, all the other human beings are genetically distinct from each other. Why is this true?

A) environmental effects

B) migration

C) sexual reproduction

From a large-scale screen of many plants of collinsia grandiflora, a plant with three cotyledons was discov - ered (normally, there are two cotyledons).

Whichof the following statements below is a result of genetic engineering? A. an orange that has a prolonged shelf life. B. a daffodil that attracts insects for pollination. C. a butter squash that has high nutritional value. D.

A nurse is exposed to hepatitis c and receives a shot of gamma globulin. what type of immunity does this nurse have?

O create hydrogen and oxygen from water, you would need to perform which type of reaction? a. synthesis b. decomposition c. double replacement d. single replacement

How do fats, oils, and waxes interact with water

Fossil records suggest major changes in early vascular plants that favored the evolution of land plants. Which was one of these major changes? Select one of the options below as your answer: A. Development of fruit B. Development of seed C.

Many people in the developing world who depend on rice in their diet suffer from diseases related to deficiencies of

Why does biology have to be a subject

Differential reproduction of genotypes leads to evolution via what process? inbreeding natural selection genetic rescue genetic drift mutational load

Why is carbon essential to all known life on Earth?