Biology, 08.11.2019 01:31 fseftrwer2522
Males of different species of the fruit fly drosophila that live in the same parts of the hawaiian islands have different elaborate courtship rituals that involve fighting other males and stylized movements that attract females. what type of reproductive isolation does this represent?
a) habitat isolation
b) temporal isolation
c) behavioral isolation
d) gametic isolation
e) postzygotic barriers
Answers: 3
Biology, 21.06.2019 16:30
Which of these statements best describes the st. lawrence seaway? the st. lawrence seaway connects the st. lawrence river with the arctic ocean. the st. lawrence seaway provides an important trading route between the u.s. and mexico. the st. lawrence seaway provides an important trading route for the u.s, but has little value for canada. the st. lawrence seaway connects the great lakes, the st. lawrence river, and the atlantic ocean.
Answers: 1
Biology, 22.06.2019 02:00
The phylogenetic tree illustrates the relationship between humans and our closest living relatives. the tree was based on biochemical comparisons, including dna and amino acid sequences. according to the biomolecular data, we could infer that a) the four organisms do not have a common ancestor. b) humans are more closely related to chimps than any other apes. c) chimps are more closely related to gorillas than they are to humans. eliminate d) there is no evidence if any relationship between the four branches on the tree.
Answers: 3
Biology, 22.06.2019 05:30
The vaccine in a flu shot contains weakened flu viruses. how does a flu shot work with the immune system? a. it destroys lymphocytes. b. it destroys macrophages. c. it activates macrophages. d. it activates lymphocytes.
Answers: 3
Biology, 22.06.2019 07:00
Crossing over and independent assortment are important activities that occur during meiosis. what is the significance of these activities
Answers: 1
Males of different species of the fruit fly drosophila that live in the same parts of the hawaiian i...
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