How can databases of variants be used to help pinpoint a disease-causing mutation? (Select all that apply.)
A) Polymorphisms found in individuals that do not have the syndrome can be eliminated from consideration.
B) Common polymorphisms are unlikely to cause a rare disease and they can be eliminated from consideration.
C) Some amino acids are conserved in genes across species; mutations in conserved amino acids are not likely to cause disease.
D) Mutations that occur between genes are most likely to cause a genetic disease.
A) Polymorphisms found in individuals that do not have the syndrome can be eliminated from consideration.
B) Common polymorphisms are unlikely to cause a rare disease and they can be eliminated from consideration.
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Which of the following is not true of the main structural forms of actin?
A) Actin filaments may form a filament network (gel). B) Actin monomers may form actin filaments or G-actin protein complexes. C) Actin filaments are severed to form filament bundles. D) Capped filaments are made from actin filaments. E) Actin filaments form filament bundles.
Color blindness is caused by heritable mutations in cone photoreceptors. How many cone types does the retina of a colorblind individual typically contain?
A. only one B. two C. three D. four E. five
Seawater is considered buffered due to the presence of:
a. oxygen ions. b. nitrogen ions. c. bicarbonate ions. d. silicon ions. e. calcium ions.
Mosses have ____
a. xylem b. lignin c. true stems d. rhizoids e. independent sporophytes