which of the following types of speciation occurs when a barrier divides members of a population A) allopatric B )PARAPATRIC C) peripatric D)Sympatric

Look at the photo of the leaf. which term best describes this leaf?

Which represents the cross between parent plants if one is heterozygous for yellow-colored pods and the other is homozygous for green-colored pods? yy  ´    ´    ´    ´  yy

Genetic disorders can result when sister chromatids fail to seperate properly. during what phase is this problem most likely to occur?