Using the previous three images, why do you think Chargaff's Rule applies? Analyze the
structure of the nitrogenous bases and the
structure of DNA. Why is it that Adenine pairs
with Thymine and Cytosine pairs with
Guanine?

What type of limiting factor affects a large population more then it affects a small population

Aresearcher has developed two stains for use with seed plants. one stains sporophyte tissue blue; the other stains gametophyte tissue red. if the researcher exposes pollen grains to both stains, and then rinses away the excess stain, what should occur? a) the pollen grains will be pure red.b) the pollen grains will be pure blue.c) the pollen grains will have red interiors and blue exteriors.d) the pollen grains will have blue interiors and red exteriors.

Environmental differences within ecosystems are generally caused by