The Immigration Restriction Act of 1924 was supported by research that demonstrated that Western Europeans were genetically superior to Eastern Europeans

a. True
b. False
Indicate whether the statement is true or false


False

Biology & Microbiology

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Evaluate this statement: crossing over is the only mechanism that creates genetic variation by creating hybrid chromosomes with new combinations of alleles.

A. False, random fertilization also creates genetic variation by creating hybrid chromosomes B. True, independent assortment and random fertilization create genetic variation by shuffling chromosomes instead C. False, independent assortment and random fertilization also create genetic variation by creating hybrid chromosomes D. False, independent assortment also creates genetic variation by creating hybrid chromosomes

Biology & Microbiology

Bacteria synthesize CDP-diacylglycerol in order to build ________, a major cell membrane phospholipid component.

A. lipopolysaccharide B. peptidoglycan C. lipid rafts D. phosphatidylethanolamine

Biology & Microbiology

Using a submersible, a biologist obtains a sand sample from the seafloor. In this sample, she discovers a new chemoautotrophic species of archaeon. She notes that these organisms thrive in cold temperatures (below 15 °C) and do not produce methane

How should this archaeon be classified? A. as a euryarchaeote archaeon B. as a crenarchaeote archaeon C. as a nanoarchaeote archaeon D. as a korarchaeote archaeon E. as a thaumarchaeote archaeon v

Biology & Microbiology

Chyluria is a result of lymphatic rupture and fluid entering the urine. Another lymphatic condition caused by W. bancrofti is:

a. calabar swelling. b. elephantiasis. c. river blindness. d. pruritic rash.

Biology & Microbiology