Write an explanation for how the process of evolution primarily results from competition for limited resources (such as water, shelter and mates) and differences in the abilities of individuals in a population to survive and reproduce in that environment

How can a shift in the proportion of genes in a population could lead to the evolution of a new species?  Explain why evolution happens to a whole population rather than to a single individual.

An allele that causes an altered form of hemoglobin occurs in all human populations. However in populations where malaria is a threat there is a relatively higher percentage of individuals with the allele. Individuals who have one allele for this condition have an increased resistance to malaria. Individuals with two alleles for this condition have significant medical problems and die young. This allele has been found in high numbers in certain populations in West Africa, Southeast Asia and Greece. What process of evolution likely led to the appearance of this allele? A-mutation B-genetic drift C-natural selection D-gene flow   Refer to the previous example (#2): What process of evolution likely led to this allele being in higher numbers in some populations? A-mutation B-natural selection C-genetic drift D-gene flow

List the premises of evolution by natural selection. What is the inevitable outcome?Variation; heritability; “struggle”/context; differential survival/reproduction

Explain what is required for evolution by natural selection to occur in a population.

Clarify why evolution occurs only in populations, not in individuals.

Jean-Baptiste de Lamarck’s explanation for the evolution of long-legged giraffes from shorter-legged okapi-like ancestors migrating to a savanna would not include which of the following features? over time, inheritance of acquired characteristics in okapis would lead to savanna giraffes once an okapi had acquired longer legs, it could pass on this new trait to its offspring only those okapis with favorable traits (long legs) could be ancestral to savanna giraffes each individual okapi could increase its leg-length by deliberate, consistent exercise okapis in a savanna habitat found it advantageous to stretch their legs for treetop leaves