Agroup of caravans containing 20 people were travelling west on the oregon trail and got horribly lost. they stopped in a very remote part of south dakota. this population was isolated for many decades until your team of researchers found them. of the 20 people from the original group, two were carriers (heterozygous) for cystic fibrosis. assuming the frequency of this allele did not change as their population grew, what was the incidence of cystic fibrosis found by your team of researchers?

Which statement describes john tuzo wilson’s contribution to the theory of plate tectonics?

In 1959, doctors began using the powerful antibiotic methicillin to treat infections of staphylococcus aureus, but within two years, methicillin-resistant strains of s. aureus (mrsa) appeared. how did the resistant strains of s. aureus emerge? in 1959, doctors began using the powerful antibiotic methicillin to treat infections of staphylococcus aureus, but within two years, methicillin-resistant strains of s. aureus (mrsa) appeared. how did the resistant strains of s. aureus emerge? staphylococcus aureus bacteria that were able to synthesize cell walls using a protein that was not affected by methicillin survived the methicillin treatments and reproduced at higher rates than did other individuals. over time, these resistant individuals became increasingly common. in response to treatment of staphylococcus aureus infections with methicillin, some bacteria began to synthesize cell walls using a protein that was not affected by methicillin. these bacteria survived the methicillin treatments and reproduced at higher rates than did other individuals. over time, these resistant individuals became increasingly common. in response to treatment of staphylococcus aureus infections with methicillin, bacterial populations gradually began to synthesize cell walls using a protein that was not affected by methicillin.

Long-period comets come from the oort cloud particles in earth’s atmosphere material from the asteroid belt the kuiper belt