Lizards show continuous variation in leg length. Lizards with very short legs are excellent burrowers and can easily avo

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Lizards Show Continuous Variation In Leg Length Lizards With Very Short Legs Are Excellent Burrowers And Can Easily Avo 1 (22.43 KiB) Viewed 73 times

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Lizards show continuous variation in leg length. Lizards with very short legs are excellent burrowers and can easily avoid predators. Lizards with very long legs are excellent climbers and can also evade predators. Lizards with intermediate length legs are neither the best climbers nor the best burrowers and tend to be captured more frequently by predators. What pattern of selection would be expected to occur in this scenario? Directional Disruptive Stabilizing
In a population of fish with different colored scales, the frequency of the dominant allele for scale color is 0.9 and the frequency of the recessive allele is 0.1 in the parent generation. Genetic analysis of the offspring (next generation) shows that the frequency of the heterozygote is 0.09. What conclusions can be drawn from this data? OOO The population is NOT in Hardy-Weinberg equilibrium and therefore is evolving. The population is NOT in Hardy-Weinberg equilibrium and therefore is NOT evolving. The population is in Hardy-Weinberg equilibrium and therefore is NOT evolving. The population is in Hardy-Weinberg equilibrium and therefore is evolving.
A herd of bison was migrating through a valley when a sudden avalanche killed 1/3 of the population. The remaining members of the herd survived and went on to produce offspring. When scientists analyzed the genetics of the next several generations, they discovered that there had been a change in the frequency of a gene controlling fur color in the herd before and after the avalanche. Is this an example of evolution, and if so, what is the driving mechanism? OO O Yes, mutation yes, gene flow (migration) Yes, genetic drift Yes, natural selection No