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Biology, 22.06.2019 00:50
What would be the result if crossing over did not happen during meiosis in humans? a. there would be less genetic variation in humans. b. parents would be more likely to look like their children. c. the human population could not reproduce. d. children would have more chromosomes.
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Biology, 22.06.2019 13:00
Astudy by solloch and et. al., in 2017, gives the map above which shows the frequency of alleles with a ccr5-delta32 mutations over 87 different countries. this mutation deletes the presence of a co-receptor (ccr5) on the outside of human t-cells (lymphocytes). some viruses, such as the one responsible for the black death and human immunodeficiency virus (hiv), require this receptor for attachment to host cells during the infection process. the black death was an epidemic that passed over northern europe during the 14th century killing nearly 60% of europeans. according to this information, which explanation best explains why northern europeans show a greater immunity for hiv than some other parts of the world?
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Biology, 22.06.2019 21:00
Agram of fat oxidized by cellular respiration produces approximately as much atp as a gram of carbohydrate.
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Biology, 22.06.2019 22:00
If we assume that, in the african savanna, rainfall and the amount of grass is plentiful, what other factor would best explain a reduced antelope population?
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SAT, 16.12.2021 16:50
SAT, 16.12.2021 16:50
Biology, 16.12.2021 16:50
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English, 16.12.2021 16:50
Mathematics, 16.12.2021 16:50
Mathematics, 16.12.2021 16:50