A graph that compares the relative number of individuals within different age groups of a population is called an age ________
Fill in the blank(s) with correct word
pyramid
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You have isolated a microbe from an environmental sample. The microbe has the ability to perform a new metabolic reaction at a very low temperature, so you are excited that it could be a new species
What experiments should you perform to determine if your isolate is truly a new species? What process will you follow to officially name your isolate? What will be an ideal response?
A large number of copies of any DNA segment can be obtained by:
a. introducing foreign DNA into a microorganism so that it can be replicated. b. stimulating increased transcription of the appropriate sequence of mRNA. c. stimulating increased translation of the appropriate DNA molecule. d. inducing the production of DNA from proteins. e. stimulating reverse transcription of tRNA.
The placenta develops from the endometrium while the fetus develops from embryonic tissue.
Answer the following statement true (T) or false (F)
Which of the following statements about human embryonic stem cells is TRUE?
A) They are obtained in great numbers from umbilical cords of newborns. B) They express no MHC II antigens. C) They are pluripotent. D) They are typically obtained from the zygote stage of embryonic development. E) They are pluripotent and typically obtained from the blastocyst stage of embryonic development.