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03.10.2019 •
Biology
Angiosperms do not need water for fertilization. why?
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Ответ:
Ответ:
The answer is c) a pollen tube grows from the pollen grain into the ovary.
Explanation:
I got it correct on the quiz
Ответ:
Both species are mammals and therefore they share genome regions and gene families that are conserved in the course of evolution.
Explanation:
Synteny enables to identify conserved genome regions between species by aligning their DNA sequences. For example, the human and chimpanzee genomes share about 95-98% of synteny (sequence similarity) in their DNA sequences. In this case, a whole-genome sequence similarity of 80 % is evidence that both species are relatively closely related and share a near common ancestor. Indeed, it is expected that the most part of the remaining 20% represents mutations associated with the fixation of neutral alleles (i.e., neutral mutations) and therefore have no evolutionary meaning.