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Genetics

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Reproduction, either asexual or sexual, is involved in the change in genetic traits over generations.
Organisms that become sexually mature at different times exhibit what type of reproduction isolation?
________frequency-dependent selection serves to_____the population's genetic variance by selecting for rare phenotypes, whereas_____ frequency-dependent selection usually ________genetic variance by selecting for common phenotypes.
The ultimate source of genetic variation is mutations.
Allopatric speciation may occur because__________prevent__________
In multicellular organisms, mutations in either somatic or gametic cells can be passed on to offspring.
The northern elephant seal went through a severe population decline as a result of human hunting. The population has rebounded but is there is little genetic variation between individuals. This is an example of?
________populations are more susceptible to the effects of__________
Natural Selection acts on _____which in turn may result in the evolution of _____ over time.
The equation p + q = 1 relates to the frequency of________in a population while the equation p2 + 2pq + q2 = 1 relates to the frequency of_________in a population.
Monkey A produces 20 offspring but only lives for 10 years while Monkey B only produces 5 but lives for 20 years, which individual is more fit?
In large gene pools, changes in gene frequencies that improve fitness in a few individuals will become predominant in the population quickly.
Many factors can influence the genetic variability in a population. random alteration in gene frequencies in the population (c)a small part of the population is separate and begins a new population (e)movement of reproductive individuals into or out of populations (f)population size is drastically reduced resulting in a smaller population (d)differences in phenotypes as a result of clines (a)female selection of males based on phenotypic characteristics (b)
Whether or not a trait is favorable depends on the environmental conditions at the time and thus the same traits are not always selected.
Microevolution is all about the changes in the _____________ in the gene pool.
Imagine you are standing in a field and you see a group of butterflies. You notice that the butterflies are not identical to each other even though they are all from the same species and the same population. One day you notice an individual that looks noticeably different from the other butterflies in the population. This difference allows the butterfly to escape predation more efficiently than other butterflies in the population.How might this trait have arisen in the individual?
Wings on insects and wings on birds are the result of convergent evolution. This means that ________.
Organisms on islands are often different from, but closely related to, similar organisms found on the nearest continent. What does this indicate?
The hybrid offspring of two species often have a reduced evolutionary fitness.
A male spider does an intricate mating dance but the female spider is not interested in dances, she prefers males with hairy legs. This is an example of?

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