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In the theory natural selection, species are most likely to survive if they: a. inherit acquired traits b. have variations that make them adapted to their environment
Patterns of Natural Selection. VOCABULARY. IRECTIONAL SELECTION: natural selection in which an extreme phenotype (i.e., phenotype either greater or lesser than the population mean) is favored over other phenotypes, causing the allele frequency to shift over time in the direction of that phenotype.
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Variation in their fur colour exists within rabbit populations. At a single gene locus, normal brown fur is produced by a dominant allele whereas white fur is produced by a recessive allele in a homozygous individual. Rabbits have natural predators like foxes which act as a selection pressure.
STUDY GUIDE. 1. Explain how each of the following relate to Natural Selection: Genetic Diversity – gives more options for nature to select from. Overproduction of offspring – provides more variety and fight for survival; ensures that at least some of the offspring will survive.
Aug 15, 2023 · Natural selection can only take place if there is variation, or differences, among individuals in a population. Importantly, these differences must have some genetic basis; otherwise, selection will not lead to change in the next generation.
Variation exists within a population as a result of genetic mutations. Alleles which provide a survival advantage are selected for through natural selection. Populations of a species can become isolated, for example through physical barriers such as a rock fall preventing them from breeding together.
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KEY CONCEPTS AND LEARNING OBJECTIVES • Natural selection can drive the evolution not just of simple traits like coat color or body size, but also of complex traits like the size and shape of skeletons. • Different environments—with different predators, food sources, or resource limitations—apply different
