Transcription of a gene depends on the presence of a particular combination of enhancers and their regulatory transcription factors, a type of gene regulation called ____ control
Fill in the blank with the appropriate word.
combinatorial
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Which antibodies cross the placenta and protect the fetus?
A. IgA B. IgG C. IgM D. IgD
All genes are expressed in either the prenatal or newborn stages. Indicate whether the statement is true or false
Which of the following could be an example of a limiting resource?
a. genetic mutations b. plenty of nesting sites c. amount of precipitation d. abundant food e. growth rate
A farmer's land includes a wilderness area that is home to an endangered species of bird. He wants to sell the land to a developer, and you have been hired to evaluate the environmental concerns. "This little patch of land is not crucial for the bird species!" the farmer says, "In fact, my land is surrounded by several other wilderness patches that also have that bird." You reply: "It is possible that your land acts as the ________ and the other areas are ________. If that's the case, development would be devastating to the population."
A. sink; sources B. metapopulation; population C. source; sinks D. population; metapopulation