Biology, 12.02.2020 00:31 LuvieAnn1886
On the volcanic, equatorial West African island of Sao Tomé, two species of fruit fly exist. Drosophila yakuba inhabits the island's lowlands and is also found on the African mainland, located about two hundred miles away. At higher elevations, and only on Sao Tomé, is found the very closely related Drosophila santomea. The two species can hybridize, though male hybrids are sterile. A hybrid zone exists at middle elevations, though hybrids there are greatly outnumbered by D. santomea. Studies of the two species' nuclear genomes reveal that D. yakuba on the island is more closely related to mainland D. yakuba than to D. santomea (2n = 4 in both species). Sao Tomé rose from the Atlantic Ocean about 14 million years ago. Using only the information provided in the paragraph, which of the following is the best initial hypothesis for how D. santomea descended from D. yakuba?A) geographic isolation
B) autopolyploidy
C) habitat differentiation
D) sexual selection
E) allopolyploidy
Answers: 1
Biology, 22.06.2019 10:50
Which type of transport is responsible for oxygen entering into blood cells? a. vesicle b.passive c. facilitated d.active b.passive
Answers: 2
Biology, 22.06.2019 17:00
What is one affect on the australian environment due to the introduction of non-native european rabbits
Answers: 1
Biology, 22.06.2019 21:00
In the controversial scientific process of cloning, organisms are created that are genetically identical to there parent. this process would be classified as
Answers: 2
Biology, 22.06.2019 21:00
Which claim correctly describes how genes can produce a phenotype? one gene is responsible for all traits. each trait is determined by a single gene. one gene can be responsible for many traits. each gene is responsible for exactly one trait.
Answers: 2
On the volcanic, equatorial West African island of Sao Tomé, two species of fruit fly exist. Drosoph...
Chemistry, 14.12.2020 18:20
Mathematics, 14.12.2020 18:20
Mathematics, 14.12.2020 18:20
History, 14.12.2020 18:20
Law, 14.12.2020 18:20
Health, 14.12.2020 18:20
English, 14.12.2020 18:20
Mathematics, 14.12.2020 18:20
Biology, 14.12.2020 18:20
Mathematics, 14.12.2020 18:20