What is caused by the human genetic condition called progeria?

a. muscular and mental deterioration shortly after puberty
b. socially inappropriate vocal outbursts and muscular twitches
c. premature aging that typically leads to death in the early teenage years
d. pattern baldness as early as age 20


Ans: c. premature aging that typically leads to death in the early teenage years

Biology & Microbiology

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Which type of species interactions will be beneficial to both species involved?

a. Commensalism b. Mutualism c. Predation d. Interspecific competition e. Herbivory

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Which statement correctly describes the relationship between the epiglottis and glottis during swallowing?

A) the epiglottis covers the glottis B) the glottis covers the epiglottis

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Enzymes that cleave DNA at specific sites are called ________.  Cutting by some of these enzymes results in single-stranded, complementary tails called ________.

A. endonucleases; sticky B. peptidases; lagging C. vectors; blunt D. DNases; leading

Biology & Microbiology