Cystic fibrosis is caused by a recessive allele. The frequency of this allele is 0.1 in a population of 2,500.
a. What is the frequency of the dominant allele?
b. How many people in this population will have cystic fibrosis?
c. How many people in this population are cystic fibrosis carriers (heterozygous)?

Select the situation bellow that would produce a total displacement of zero. a. a trip to the moon and then to mars b. a horse galloping from one end of a field to another c. the criss-crossing path of a bug as it flies from flower to flower d. a round-trip ride to school and back

In 1992, hurricane andrew left a wake of destruction through florida. one victim of the storm was a reptile-breeding facility. over 900 burmese pythons were set free, and today thousands of pythons live in florida. these pythons are an invasive species, or a harmful species not native to the region. 1. what impacts do you think the burmese pythons might have on local ecosystems

Acommon kind of mechanical weathering is called