The specialization of stem cells into various cellular types is called ________
Fill in the blank(s) with correct word
differentiation
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Natural colonization can happen in all of the following ways except
A. a flock of birds gets blown off course. B. a bird eats a fruit on the mainland and defecates the seed on an island. C. people plant new species on an island. D. lowered sea levels connect two areas previously isolated. E. birds pick up seeds on their feet while wading in mud and drop them elsewhere.
In mosses and fungi, the process of meiosis produces
A) egg cells. B) pollen nuclei. C) spores. D) sperm cells. E) prothalli.
The birth rate in a population of 400 feral cats
is 100 per year. The death rate in this same population is 40 per year. The per capita growth rate of this population of feral cats is ___ per cat per year.
a. .25 b. .1 c. .15 d. .4 e. 0
Which type of hormone interacts with target tissue similarly to steroid hormones?
a. thyroid hormones b. insulin c. cAMP d. growth hormone e. melatonin