Biology, 18.07.2019 21:30, amulets2274
How is it possible that phylogenies based on sequences from nuclear genomes and organellar genomes (i. e., chloroplasts and mitochondria) from the same group of species yield phylogenetic trees with different branching orders? the genome of the endosymbiont is more closely related to members of the group in which it originally evolved, while the nuclear genome of the engulfing organism has its own evolutionary trajectory. for organelles like chloroplasts, no mutations can occur or photosynthesis would stop and the organism would die. the nuclear genome can accumulate mutations, so it can continue to evolve. nuclear and organellar genes evolved at different rates, obscuring evolutionary relationships. transfer of genetic material from the genome of the endosymbiont to the host results in two phylogenies, host and endosymbiont. the host genome continues to accumulate mutations, but the endosymbiont genome cannot?
Answers: 1
Biology, 22.06.2019 07:30, china2221
The ancestors of plants that lived in water had plenty of water for the young. angiosperms are a group of land plants that evolved a reproductive trait for living on land. this trait protect young plants by allowing them to grow only when water is present and the conditions for healthy development are right. what trait most likely young angiosperms in this way?
Answers: 1
Biology, 22.06.2019 15:00, Marliii363782
Which organelle plays a role in intracellular digestion?
Answers: 1
Biology, 22.06.2019 15:00, alicemareus
Which of the following organisms are capable of self-fertilization? a. plants b. tigers c. humans
Answers: 2
How is it possible that phylogenies based on sequences from nuclear genomes and organellar genomes (...
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