if crossing over occurs between two chromatids on a single pair of homologous chromosomes, how many gametes will have a recombinant chromosome?

The rapid decomposition of organic matter produces evidence which supports: the slow accumulation of coal deposits long ages of the earth rapid burial of vast amounts of vegetation biblical account of noah's flood

Individuals do not compete directly for resources, but are prey for the same predator

The distant ancestors of tigers may have had bodies without stripes. use the theory of natural selection to explain how tigers may have evolved to have stripes.