Most histone genes encode standard histone proteins. These proteins are called histone _________.
Fill in the blank(s) with the appropriate word(s).
Ans: variants
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The coagulation system serves to:
a. increase blood flow to the area of infec-tion and can also effectively wall off the infection through the production of barrier substances. b. attract and enhance the activities of pha-gocytes. c. provide substances secreted by one type of cell, which have substantial effects on the antiinfective activities of other cells. d. ingest and destroy microorganisms.
Could two phenotypically normal parents have a child with Tay-Sachs Disease?
a. Yes b. No
Which is not a characteristic of the gymnosperms?
A) Cones B) Seeds C) Pollen D) Flowers
The preserved remains or physical evidence of an organism that lived in the past are called -
a. evolutionary features b. fossils c. mutations d. variations