英语词汇“alternation of generations”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

alternation of generations

noun [mass noun] Biology

A pattern of reproduction occurring in the life cycles of many lower plants and some invertebrates, involving a regular alternation between two distinct forms. The generations are alternately sexual and asexual (as in ferns) or dioecious and parthenogenetic (as in some jellyfishes).Like plants and many protists, brown algae undergo a complex life cycle involving alternation of generations....

In many organisms with both sexual and asexual reproduction, including most sexual protists, fungi, algae, and nonseed plants, sex involves an alternation of generations between haploid and diploid phases.
Although they are often unicelled and simple, some algae have a 1n - 2n life cycle which constitutes an alternation of generations.

单词	alternation of generations
释义	alternation of generations noun [mass noun] Biology A pattern of reproduction occurring in the life cycles of many lower plants and some invertebrates, involving a regular alternation between two distinct forms. The generations are alternately sexual and asexual (as in ferns) or dioecious and parthenogenetic (as in some jellyfishes).Like plants and many protists, brown algae undergo a complex life cycle involving alternation of generations.... In many organisms with both sexual and asexual reproduction, including most sexual protists, fungi, algae, and nonseed plants, sex involves an alternation of generations between haploid and diploid phases. Although they are often unicelled and simple, some algae have a 1n - 2n life cycle which constitutes an alternation of generations.
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