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The endosymbiosis theory argues that mitochondria and chloroplasts were originally prokaryotic cells that were engulfed by ancestors of current day eukaryotic cells. List two properties possessed by both mitochondria and chloroplasts that suggest a prokaryotic origin and explain how each property is more prokaryotic than eukaryotic.
The DNA sequence of a codon in a gene was changed from AAT to AAC. This type of mutation is known a(n) as.
Recognize a Superfund site within your own state. A Superfund site is not a web site; it is a physical location with high levels of pollution.
Eukaryotic cells are more complex than prokaryotic cells. Explain their differences, functions and the composition of each including how genetic material is replicated.
Explain a muscle contraction beginning with the motor neuron to relaxation of the muscle. Discuss the physiological relationship of the muscular and skeletal system.
A different walnut rooster was crossed to a rose hen, and all the progeny were walnut. What are the probable genotypes of the parents.
Both endocrine and nervous system are major regulating system of the body; but nervous system has been compared to an airmail delivery system and the endocrine to pony express. Briefly explain the comparison.
The brown and scarlet mutations assort independently. If fruit flies that are heterozygous for both of these mutations are intercrossed, what sorts of progeny will they create, and in what proportions? Describe how you got the answer.
According to our current knowledge of plant evolution, which group of organisms should feature mitosis most similar to that of land plants.
which nucleotide sequences represents complement to DNA
Research protist parasites in the Genus Giardia. Scientists have proposed that these organisms represent the "missing link" between prokaryotes and eukaryotes. Explain the cellular structure of Giardia and describe how the cells are alike to typical ..
What is the biochemical pathway that corresponds to duplicate dominant epistasis in genetics? There is a 15:1 ratio of phenotypes, there are two genes involved: A and B. but what is biochemical pathway that causes this ratio to form.
What have to be true of the cell wall of this bacterium? Mammalian blood contains an equivalent of 0.15 M. Seawater contains the equal of 0.45 M. What will occur if red blood cells are transferred to seawater.
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