In the United States, oral contraceptives are the most common means of birth control. Indicate whether the statement is true or false
False - tubal sterilization
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What is the function of histone proteins?
A. organize DNA in eukaryotic chromosomes B. connect chromosomes to the mitotic spindle C. organize the microtubules that make up the spindle D. attach sister chromatids together
Acquired characteristics
A. are passed on to the offspring. B. are caused by mutations. C. result in natural selection. D. are obtained after fertilization.
During the formation of an embryo, the hollow ball of cells having a fluid-filled cavity is called a
A. neurula. B. blastula. C. gastrula. D. blastocoel. E. morula.
Which of the following factors contributed to the Great Depression of the 1930s?
a) artificial fixing of currency rate by China b) problems in the U.S. subprime mortgage lending market c) countries progressively raising trade barriers against each other d) outsourcing of manufacturing units to developed nations