Enrichment cultures can be established by placing the inoculum into selective media and incubating under specific conditions
Indicate whether the statement is true or false.
Answer: TRUE
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What is the inguinal canal in males and how does it form during development?
What will be an ideal response?
Chitin is a chemical component of the cell walls of ________.
A. bacteria B. fungi C. algae D. helminths E. protozoa
What is the primary function of a cellular membrane?
a. recognizing other cells as being "like" b. controlling the transport of substances into and out of cells c. recognizing chemical signals from other cells d. cell-cell binding
Surprising new evidence has shown that, in some cases, environment factors can modify chromosomes in such a way that changes the expression of genes without changing themselves or any part of the DNA sequence. These modifications are called epigenetic effects. Epigenetic effects can sometimes even be passed from generation to generation. In what way would this kind of "inheritance" be an exception to Mendel's laws?
A. According to Mendel's laws, the effects of our environment are not passed on to the next generation. B. Since they are scientific laws, Mendel's laws can't be violated even if there is new evidence to the contrary. C. These effects must be caused by mutations. D. Mendel's laws apply only to pea plants, not all sexually reproducing organisms.