Which process sets the developmental fate of an embryonic cell?
a. fertilization
b. meiosis
c. induction
d. differentiation
e. determination
ANSWER: e
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Efforts to define the last universal common ancestor (LUCA) currently estimate 80–500 genes are shared by all known species. The lower value of 80 was estimated by determining the number of:
A. mRNAs species produced in LUCA. B. genes coded by LUCA genome. C. genes in simplest bacterial species. D. clearly identifiable orthologs in all organisms. E. genes required for processes that are found in all organisms.
Phage typing
A. is useful for determining eukaryotic cell types. B. is used to extract DNA from cells. C. is used to distinguish bacterial strains. D. is dependent on the type of eukaryotic cell. E. is used to distinguish bacterial strains AND is dependent on the type of eukaryotic cell.
The digestion and utilization of this material creates the greatest need for nitrogenous waste secretion by the kidneys.
A. collagen B. amylose C. oleic acid D. glucose E. lactose
Explain why we have a more complete historical record of diversity in North American dinosaurs than we do of rain
forest organisms What will be an ideal response?