The two nitrogen atoms in nitrogen gas (N2) share six electrons forming a ________.
A. single covalent bond
B. triple covalent bond
C. hydrogen bond
D. double covalent bond
E. double bond
Answer: B
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On which chromosome is the BRCA2 gene located?
A. 3 B. X C. Y D. 13 E. 17
Which of the following is NOT a documented biological result of global warming?
a. Warm-adapted marine species are becoming more common and cold-adapted species less common. b. Plants display earlier flowering and growth. c. Alpine butterflies are shifting their distribution 6.1 meters higher in altitude per decade. d. Animals display earlier migration and breeding. e. Massive animal extinction.
Someone who loses the ability to make blood cells might need a transplant of the porous tissue known as ________ from a close relative
Fill in the blank(s) with correct word
___________________ gives rise to new species and higher taxonomic groups widely divergent characteristics
A. Macroevolution B. Microevolution C. Adaption D. Population genetics