Two common species of frogs from the genus bombina (b. bombina and b. variegata) live in similar latitudes and ecological conditions, but in two different regions, central and eastern europe. in a narrow strip between these regions, scientists observed a third species, which might have been a hybrid between the former diverging populations of the ancestral species. what evolutionary process might be responsible for the speciation in bombina? top of form
a. allopatric speciation
b. parapatric speciation
c. sympatric speciation
d. none of the above
e. bottom of form

Which statement best describes the relationship between an allele and a gene? question 1 options: an allele is a variation of a gene that can be expressed as a phenotype. an allele is the part of a gene that attaches to messenger rna molecules. an allele is a segment of a dna molecule that controls replication of a gene.

When in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? view available hint(s)when in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? active transportexocytosis

Types of scientific inquiry that biologist engage in that cannot be completely controlled