Darwin's Theory Study Guide 2024.

Darwin's Theory Study Guide 2024. A person with a genotype of HbSS has sickle cell disease. A person with a genotype of HbAS allele carries the sickle cell trait. A person with a genotype of HbAA does not have sickle cell disease and does not carry the trait. The Punnett square shows the genotype of two people carrying the sickle cell trait. What are the chances that their offspring will have sickle cell anemia? - ANSWER 25% The map shows the allele frequency of sickled hemoglobin (HbS) and malaria endemicity in Africa. Which statement best explains the relationship between HbS allele frequency and malaria endemicity in Africa? - ANSWER When an area is malaria free, the HbS allele frequency is between 0 and 2.02. What is the best description of an organism that is fit for natural selection? - ANSWER The organism is better able to survive and pass on traits to offspring than competing organisms. Which would least likely be a cause of natural selection? - ANSWER evolution A population of white rabbits and brown rabbits both live in a temperate deciduous forest where the summers are mild and average about 50°F. The winters are often below freezing. If warmer temperatures last longer into the fall and the average temperature in the winter is getting warmer, what do you expect to happen to the population of each color of rabbit? - ANSWER The brown rabbit population will thrive and reproduce, and the white rabbit population will slowly die out. Scientific investigations often lead to the formulation of new scientific questions. The observations Charles Darwin made during his time aboard the H.M.S. Beagle prompted him to ask which question? - ANSWER Do living organisms change over time and, if so, how?