How many chromosomes does a human sperm cell or egg cell contain?

Population density is calculated by? a. dividing the number of organisms in a region by the land area b. multiplying the number of organisms in a region by the land area c. dividing the land area by the number of organisms in the region d.

6. In canaries, the gene for singing is dominant over the gene for nonsinging. When hybrid singing canaries are mated with nonsinging canaries, what percentage of the offspring is likely to possess the singing trait?

Describe a predatory adaptation of the basking shark.

What is the term for mold getting its nutrients

Which of the following describes a species' niche? A. Physical location where the species can be found B. Maximum amount of offspring the species will have C. The unique role the species plays in an ecosystem D.

A 25 year old male develops a tumor of the breast glandular tissue. which type of tumor is this tumor classified as?

Genes determine the what of organisms?

Which of these best defines a species? O A. Only the individual organisms that have adaptations for where they live O B. All individual organisms that can interbreed and produce fertile offspring O C.

Select all that apply the bones or the lower arm are Radius Humerus Uina Tibia Fémur

The theory of evolution tells us that living things never change all living things reproduce sexually living things change over time livings can predict change