Answers: 2
Biology, 22.06.2019 00:10
The production of cells during mitosis into specialized function is recombination or differentiation
Answers: 1
Biology, 22.06.2019 01:00
Which of the following is not a symptom of desertification? a) decrease in salt content of the soil b) lowering of the water table c) reduced surface water d) increased soil erosion e) loss of native vegetation
Answers: 1
Biology, 22.06.2019 03:00
To answer this question, researchers studied populations of the dusky salamander (desmognathus ochrophaeus) living on different mountain ranges in the southern appalachian mountains. the researchers tested the reproductive isolation of pairs of salamander populations by leaving one male and one female together and later checking the females for the presence of sperm. four mating combinations were tested for each pair of populations (a and b)Γ’β¬βtwo within the same population (female a with male a and female b with male b) and two between populations (female a with male b and female b with male a). the proportion of successful matings for each mating combination was measured. for example, when all the matings of a particular combination were successful, the researchers gave it a value of 1; when none of the matings were successful, they gave it a value of 0. then the researchers calculated an index of reproductive isolation that ranged from 0 (no isolation) to 2 (full isolation). the reproductive isolation value for two populations is the sum of the proportion of successful matings of each type within populations (aa + bb) minus the sum of the proportion of successful matings of each type between populations (ab + ba). the table provides data for the geographic distances and reproductive isolation values for 27 pairs of dusky salamander populations.
Answers: 1
Biology, 22.06.2019 06:40
Which term describes a normal value for something in the body? a.homeostasis b.set point c.feedback loop d.integration center
Answers: 1
Describe role of plant dieseas in forest ecosystem?...
Mathematics, 12.01.2020 15:31
Mathematics, 12.01.2020 15:31
History, 12.01.2020 15:31
Mathematics, 12.01.2020 15:31
History, 12.01.2020 15:31
Mathematics, 12.01.2020 15:31
Mathematics, 12.01.2020 15:31
Mathematics, 12.01.2020 15:31
Mathematics, 12.01.2020 15:31