Patients with an abnormally long chromosome 9 have ____

a. the Philadelphia chromosome
b. a rare form of eye development
c. hemophilia
d. Down’s syndrome
e. a deletion mutation


ANSWER: a

Biology & Microbiology

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Match the skeletal muscle protein on the left with its function on the right.

A) myosin-binding protein at M line B) binds along the length of thin filaments C) major protein of sarcoplasmic reticulum D) attaches actin filaments to Z line E) mediates calcium regulation of contraction F) attaches actin to Z line G) links thick filaments to Z line H) major component of thin filaments I) major component of thick filaments J) links thin filament to Z line 1) actin 2) myosin 3) tropomyosin 4) troponin 5) titin 6) nebulin 7) myomesin 8) ?-actinin 9) Ca2+ ATPase 10) CapZ

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In the Hardy-Weinberg equation, 2pq refers to

A) the proportion of heterozygotes in a population. B) the number of homozygous dominant individuals in a population. C) the most common phenotype in a population. D) individuals who are homozygous recessive.

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Which of the following states that changes in species composition are orderly and predictable during succession?

1.The facilitation hypothesis 2.The inhibition hypothesis 3.The tolerance hypothesis

Biology & Microbiology

DNA strands can be clipped crosswise at selected positions by using enzymes called

A. DNA polymerases. B. ligases. C. palindromes. D. reverse transcriptases. E. restriction endonucleases.

Biology & Microbiology