How does the recessive sickle cell allele stay in the gene pool

How can humans have a positive impact on air quality? by using public transportation instead of driving a car by moving to a large city, where air quality is better by removing vegetation such as trees and shrubs

Will geographical isolation be a major factor in the speciation of an organism that reproduces asexually? Why or why not?

How would an increase in the sympathetic nervous system increase stroke volume?

Draw and label a typical structure of plant cell. Describe the function of all the parts of plant cell.

The long band of nerve fibers that connects the brain's hemispheres is:

Name the calf muscle.

Describe the outcome of irregular mitosis, meiosis I and meiosis II. be sure use all relevant terminology and to note the impact on chromosomal number in each circumstance.

Where is Earth located in relation to the sun?

In the equation used to calculate acceleration Vi stands for?

A 17 year-old female has a bone marrow biopsy for examination as a potential volunteer stem cell donor for her mother who has acute monocytic leukemia (aml). what diagnosis code (s) is/are used for the typing of the stem cell specimens?