The endo-symbiotic theory states that ; one piece of evidence supporting this theory is the fact that
a. the first hereditary material was rna . mitochondria and chloroplasts have heredity based on rna.
b. mitochondria and chloroplasts originated as ingested prokaryotes. mitochondria and chloroplasts have their own dna.
c. the genomes of complex animals came in part from the genomes of invading pathogens . the human genome contains the complete genomes of 120 viruses and 10 bacteria.
d. over time, parasites evolve to resemble their hosts. the dna of human parasites contains segments of human dna.

In eukaryotes, genetic information is passed to the next generation by processes that include mitosis or meiosis. which of the explanations identifies the correct process and supports the claim that heritable information is passed from one generation to another? a. mitosis, followed by cytokinesis, produces daughter cells that are genetically different from the parent cell, thus insuring variation within the population. b. during mitosis, dna replication occurs twice within the cell cycle to insure a full set of chromosomes within each of the daughter cells produced. c. in asexual reproduction, a single individual is the sole parent and passes copies of its genes to its offspring without the fusion of gametes. d. single-celled organisms can fuse their cells, reproducing asexually through mitosis to form new cells that are not identical to the parent cell.

What does the hardy-weinberg principle relate to? a. chances of survival of an organism b. frequency of alleles in a population c. natural selection in a species d. causes of evolution among organisms

Abeaker of water was heated and then placed on a bench in the laboratory. the water cooled until it was the same temperature as the air in the laboratory. which of these explains the mechanism by which the water cooled? a. heat energy was transferred from the water to the air. b. water molecules from the water formed warm water currents. c. the water molecules absorbed energy from the molecules in the air. d. the water released radiation until it contained no heat energy.