Ap Bio Essay Cephalization

And then the second one is, if you're more likely to be eaten, then you're less likely to reproduce.If, actually that should be capital I, if, if the mouse is more likely to be eaten by being active during the day, then it is less likely to reproduce, then it is less likely to reproduce. With this information one can predict how the disease will affect a population in the future. What are the two broad processes that make evolution possible? Point mutation: Has impact in phenotype, like a sickle cell disease, most however are harmless.

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How can the H-W equation be used to today in terms of human health?And if I were, if I were taking the AP test here, I would try to put as much context as possible, because you're not exactly sure how they're, they're going to mark this thing, to grade this thing, so you could give more context that therefore, the mice that are active during, therefore, therefore, mice that are active during night, they have to be active sometime, active during night and inactive during day will be selected for, will be selected for, less likely to be eaten, less likely to be hunted, I guess you could say, and more likely to reproduce, more likely to reproduce, reproduce, and we are done.This appears to be a contradiction to evolution because it seems to say populations will never change. Why would we discuss adaptive evolution and what role does natural selection play? So the mutant mice, they don't have, they have some, they're lacking genes that control circadian rhythm, but under L12: D12, they don't need the genetic circadian patterns, the genetically-influenced ones, because they get the ones from their environment, the light and the darkness.It was maybe 9, 10, or 11 hours of activity, followed by 9, 10, or 11 hours of inactivity. The theorem states that frequencies of alleles and genotypes will stay the same as long as the gametes are contributed to the next population at random. Because the genetic code is redundant, point mutations in genes may have little effect because they do not alter proteins amino acids. DNA is introduced to a new genome through activity of transposable elements. Hardy-Weinberg equilibrium is the condition describing a non-evolving population (one that is in genetic equilibrium). Use the blank diagram below to relate the H-W equation to a Punnett square. The two broad processes that make evolution possible are mutation and sexual recombination. A reason for this is that much DNA in eukaryotic genomes do not code for protein products. Gene duplication Duplications, deletion and rearrangement of chromosome segments are almost always harmful but if it leaves that gene intact it may be neutral and in rare cases beneficial.Disruptive selection occurs when conditions favor individuals on both extremes of a phenotypic range over individuals with intermediate phenotypes. Diploidy preserves genetic variation because instead of giving you the same exact 46 chromosomes as one of your parents you get 23 from each making up an entire set for a new living creature. Heterozygote advantage—Gender reproductive success of heterozygous individuals compared to homozygote; it tends to preserve variation in gene pools Ex.Stabilizing selection acts against extreme phenotypes and favors intermediate variants. By doing so you have less of a chance of receiveing the same exact genes your parents did. How does balancing natural selection relate to the term balanced polymorphism? : Heterozygous protection from the disease malaria in Africa.I will be looking for a reasonable answer for this question. This is the average percent of a species/population that are heterozygous. How can very small differences in nucleotide sequences lead to such diversity in the human population? What is geographic variation and how does the term cline relate? What is different about the terms fitness and relative fitness?Fitness is the contribution an individual makes to the gene pool of the next generation, relative to the contributions of other individuals.


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