What molecular conformation (structure) of homologous chromosomes facilitates crossing over? tetrad meiosis ii triads mitosis

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.

Explain how the number of similarities between the embryos from early stage to late stage is used as evidence of a common ancestry

Which of the following is not a potential result of deforestation?