After examining the tree of life of all known living organisms depicted in the figure above, describe the rela-tionship of the Animal Kingdom to the rest of life on Earth
What will be an ideal response?
ANS:
Will vary, but should include the very small portion of the tree of life made up by humans and other verte-brates and may include mention of the human species' main focus on other vertebrate species sometimes at the exclusion of the majority of life on Earth, especially in terms of study and protection.
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____________________ is spread by droplets produced when an infected person sneezes or coughs. Fill in the blank(s) with the appropriate word(s)
Drosophila mutations such as bcd, if homozygous in the mother, produce offspring with lethal defects, no matter what the genotype of the offspring. For some other genes, the mutant phenotype can be "rescued" by introducing a wild-type allele
What is the reason for these different outcomes? A) Non-rescuable mutations are of paternal origin. B) Rescuable mutations act as dominants. C) bcd is a maternal effect mutation. D) Rescue requires recombination between the maternal and introduced alleles. E) bcd is a Hox gene.
Which of the following accounts for the negative control of operons?
A. Promoters B. Repressors C. Structural genes D. Operators E. Deactivators
Using the formula determine the original cell density in the sample: OCD = Number of CFU/Amount plated x dilution factor . You counted 235 colonies on a plate in your dilution series. The plate was inoculated with 0.1ml from a 10^-7 test tube, what is the OCD?
What will be an ideal response?