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But in asexual reproduction, the two alleles must independently arise through clonal interference. The "Vicar of Bray" hypothesis (or Fisher-Muller Model [1]) attempts to explain why sexual reproduction might have advantages over asexual reproduction. Reproduction is the process by which organisms give rise to offspring.
Zoetis Inc. (/zō-EH-tis/ [4]) is an American drug company, the world's largest producer of medicine and vaccinations for pets and livestock. [ 5 ] [ 4 ] [ 6 ] The company was a subsidiary of Pfizer , [ 7 ] the world's largest drug maker , but with Pfizer's spinoff of its 83% interest in the firm it is now a completely independent company.
An information theoretic analysis using a simplified but useful model shows that in asexual reproduction, the information gain per generation of a species is limited to 1 bit per generation, while in sexual reproduction, the information gain is bounded by , where is the size of the genome in bits.
In biology, a biological life cycle (or just life cycle when the biological context is clear) is a series of stages of the life of an organism, that begins as a zygote, often in an egg, and concludes as an adult that reproduces, producing an offspring in the form of a new zygote which then itself goes through the same series of stages, the ...
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A study published in 2009 supported the cost of reproduction and terminal investment hypotheses in the burying beetle. It found that beetles manipulated to overproduce young (by replacing a 30 grams (1.1 oz) mouse carcass with a 20 grams (0.71 oz) carcass) had shorter lifespans than those that bred on just 30 grams (1.1 oz) carcasses, followed ...
A merozoite (G. meros, part [of a series] + zōon, animal) is the result of merogony that takes place within a host cell. During this stage, the parasite infects the host's cells and then replicates its own nucleus and induces cell segmentation in a form of asexual reproduction.
(Typically when pollen encounters a receptive stigma, a series of changes occur which ultimately lead to the growth of a pollen tube down the style, allowing for the formation of the zygote.) Empirical investigation has demonstrated that these barriers act at many different developmental stages and species can have none, one, or many barriers ...
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