When comparing the genetic characteristics between embryonic and adult stem cells, embryonic stem cells
A. are collected from the testes and ovaries, while adult stem cells are collected from other tissues.
B. are produced naturally in human development, while adult stem cells are from cloning.
C. There is no real genetic difference between embryonic and adult stem cells, except how they were collected.
D. can't differentiate into any specialized cells, while adult stem cells can.
E. can differentiate into any specialized cells, while adult stem cells can't.
E. can differentiate into any specialized cells, while adult stem cells can't.
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The three cell types discussed, eukaryotes, archaea, and bacteria, all derived from ________.
A. photosynthetic bacteria B. archaea C. cells with a true nucleus D. the last universal common ancestor
Ten songbirds are isolated at birth and not exposed to any adults' songs as juveniles. After six months, it is observed that they sing the normal adult songs of their species. What can be concluded about the singing behavior in this particular species?
A. It is an innate behavior. B. It is a combination of innate and learned behavior. C. It is a learned behavior. D. It is a conditioned response. E. It is an operant response.
One major difference between bacterial and eukaryotic RNA polymerase is that
a. prokaryotes have several RNA polymerases. b. eukaryotic RNA polymerase can polymerize RNA in the 3? to 5? direction. c. prokaryotic RNA polymerase recognizes several different promoters. d. eukaryotic RNA polymerase has only one polypeptide. e. eukaryotic RNA polymerase cannot read DNA to find the promoter sequence.
Genetics is the study of ________
A) mutation and recession B) transcription and translation C) replication and recombination D) inheritance and variation E) diploid and haploid