Biology, 01.09.2019 01:50 angoraspinner
Marine debris mostly originates from oceangoing ships. true or false
Answers: 2
Biology, 21.06.2019 16:30
An atom of nitrogen had seven protons in its nucleus. how many electrons does it have
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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?
Answers: 1
Biology, 22.06.2019 20:30
Aspecies has evolved an asexual mode of reproduction by having offspring develop from unfertilized eggs. which of the following will be true of this species' response to natural selection? there will be more deaths from natural selection because there is no mutation. there will be less genetic variation from recombination and a risk of not adapting quickly to environmental change. the species will increase in numbers because genetic variation is increased. the species will compensate for loss of genetic variation by hybridizing with other species. there will be fewer deaths from natural selection because sexual recombination always leads to extinction.
Answers: 1
Biology, 23.06.2019 02:30
Suppose a dominant allele codes for a big nose and a recessive allele codes for a small nose imagine that an organism receives a dominant allele from its mom and a dominant allele from its dad. what can be determined about its genotype and phenotype?
Answers: 1
Marine debris mostly originates from oceangoing ships. true or false...
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