The graph shown here is from a natural selection lab in which students "hunt" for candy in different simulated environments.  Examine the graph and answer the questions below it. Approximately how many of each candy species were present in generation 1 (round to the nearest 10)?   Which candy species was the least able to hide from the predators in Generation 3? Which candy species had the best survival rate throughout the first four generations of the simulation? Does this data support the hypothesis that Snikers were the most fit for the simulated environment? Please answer yes or no

Suppose scientists studied a species of plant that grows in shady environments. They measured the size of leaves in two plant populations and found that the size distribution was similar. In addition, they found that plants with larger leaves tended to produce more seeds and that their offspring tended to have large leaves. The scientists also measured the selection differential, S, of leaf size in each population. In population A, S equalled 1 cm². In population B, S equalled 2 cm?. Assume that the heritability of leaf size in the two populations is the same. Predict how the difference in S between the populations will affect the evolution of leaf size in these populations. O After a given number of generations, the leaves in population B will be larger than those in A. Because S indicates variance in leaf size, leaf size will evolve more rapidly in population B than in A. Environment plays a larger role in determining leaf size in population B than in population A. Because S…

Consider a gene with two alleles, C and M. The table below describes fitness for different genotypes in two populations.   Fitness   CC CM MM Population 1 1.0 1.0 0.6 Population 2 0.9 0.9 1.0  Assume that both populations begin with frequencies of 0.5 for each allele, population size is infinite, and there is no migration between populations. Which of the following statements is true based on the information you have on these populations?

In a population of mayflies, variation in the STRIPE gene causes different body coloration. SS individuals have skinny stripes, Ss individuals have wide stripes, and ss individuals are unassigned. You collect some mayflies and estimate that the frequency of the S allele is 0.85. You want to know whether the population is evolving, so you will return to the same site next summer and collect 1000 mayflies from the next generation. If the population is not evolving, how many of the 1000 mayflies collected next summer should have wide stripes. (round to the nearest whole number) A. 255 b.850 C. 723 D. 23

Imagine you were to collect data from simulation 2 (negative selective pressure on SS genotypes) over five generations. The frequency of the S allele over time is graphed below. The graph shows a rapid decrease in the sickle cell allele frequency in the first generation but a slower decrease in later generations. By the fifth generation, the allele is not completely eliminated from the population. Provide two plausible explanations for why the S allele persists after five generations.

answer choices for a) derived, ancestral answer choices for b) four limbs, feathers answer choices for c) feathers, four limbs, no body temperature regulation, aquatic

The following table provides phenotypic data for a population of mammoths living in cold environments based on fossil and DNA evidence. Based on this data and your knowledge of natural selection, which explanation best explains the trends seen in the data? Individuals with thicker fur had a survival advantage in the cold environment, allowing these individuals to reproduce more often and create more offspring.   Individuals within this population of mammoths tend to only mate with individuals that have thick fur.   This population of mammoths appear to be in Hardy-Weinberg equilibrium since no allele frequencies are changing over time.   Individuals with thick fur migrated into the population of mammoths, increasing the proportion of these individuals.

You have sequenced the Rag1 gene in two populations of snails that vary in the amount of parasites. The Rag1 gene codes for proteins that affect the immune system. The results were analyzed looking for synonymous and nonsynonymous substitutions and are in the table below. Determine if the populations are under selection and comment on which population has the higher infection of parasites.     Population 1 Population 2 Synonymous 5 6 Nonsynonymous 4 13

Could you please answer part 3 and 4

Cana a change in the physical enviroment of a population result in evolution by natural slection?(hint: remember the peppered moth's camouflage and color changes of tree bark due to pollution)