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A biologist measures the allele frequencies of pea plants in a very controlled environment. The plants can either have a dominant tall allele (T) or a recessive short allele (t). Which of the following is a reason that this population is not at Hardy-Weinberg equilibrium?
Weegy: As a side effect of Mendel's choice of pea traits, he also discovered a genetic feature called dominance, where the presence of a dominant allele can completely hide the presence of a recessive allele. [ This either-or condition was necessary to his working out genetic rules, but it has since been found (and he probably realized) that many traits don't follow such an extreme pattern. Many allele effects are not that strong or weak, but rather blend to produce the trait. (In human eye color, very dark alleles can be dominant over very light alleles - brown can dominate blue - but middle-strength alleles blend, such as when green and light brown produce hazel). It also turns out that many traits, in fact most traits, are a product of at least two genes working together, two alleles per gene; these multiple-gene traits do follow rules based upon Mendel's discoveries, but the complex mixing of many alleles makes predictions of offspring traits a matter of probabilities. With all that we know of genetics, breeding racehorses is still a matter of mating parents with desired traits and hoping everything mixes properly in the offspring, which is what they were doing before Mendel was born. if that doesn't help here's a link that might ] User: Which adaptation would help a plant live in a desert? User: What is a reproductive strategy? Weegy: There are a wide range of reproductive strategies employed by different species. Some animals, such as the human and Northern Gannet, do not reach sexual maturity for many years after birth and even then produce few offspring. [ Others reproduce quickly; but, under normal circumstances, most offspring do not survive to adulthood. For example, a rabbit (mature after 8 months) can produce 10?30 offspring per year, and a fruit fly (mature after 10?14 days) can produce up to 900 offspring per year. These two main strategies are known as K-selection (few offspring) and r-selection (many offspring). Which strategy is ... (More)
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Asked 6/19/2012 7:16:41 AM
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In the Hardy-Weinberg equation shown below, p is the frequency of the dominant allele, and q is the recessive allele. What does q2 represent in the equation? User: A plant has two alleles for color. The red allele is recessive, and is represented by q. The purple allele is dominant, and is represented by p. If 76 of 100 organisms are red, what is q?
Weegy: In the Hardy-Weinberg equation, p^2 + 2pq + q^2 = 1, the term q^2 represents the proportion of the population with the recessive phenotype. The proportion of this population with the recessive phenotype is 30/100=0,30 That is q^2. [ The frequency of the recessive allele, q, is just the square root of 0,30so q^2 = 0.76 ] User: What happens when a population is in Hardy-Weinberg equilibrium? Weegy: The gene pool stays the same. The above is correct. Another possible answer is The phenotype frequency does not change. The allele frequency does not change. [ 1.No mutation occurs. 2.Each allele must be equally beneficial. 3.The population must be infinitely large. 4.All members of the population must breed. 5.All mating must be totally random. 6.All individuals must produce the same number of offspring. 7.No immigration or emigration can occur. Read more: ] User: does the population change in Hardy-Weinberg equilibrium? Weegy: all organisms must reproduce User: does the tolal number of organisms change in hardy weinberg equilibrium Weegy: All individuals must produce the same number of offspring. (More)
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Asked 6/19/2012 6:32:36 AM
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what is the circuit with 2 batteries connected to 1 lightbulb User: When a fuse blows, ___________. User: How is the wiring done in houses and other occupied buildings?
Weegy: It is in parallel, so one light can be on while others are turned off. Read more: (More)
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Asked 6/19/2012 6:10:47 AM
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