What organism accounts for a major proportion of the ocean's organic matter and oxygen production?
a. Chemosynthetic bacteria
b. Obligate anaerobes
c. Cyanobacteria
d. Plycoerythrin
c
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The size of the mouse (M. musculus) genome is 2700 megabases (Mb) and it contains about 25,000 genes arranged on 40 chromosomes. If the genes are evenly distributed on chromosomes in the mouse, what is the average number of genes per chromosome?
A) 1 B) 9.3 C) 67.5 D) 625
What is clonal selection? How does it occur?
What will be an ideal response?
The __________ consists of skull bones, a vertebral column (backbone), and a rib cage.
Fill in the blank(s) with the appropriate word(s).
A eukaryotic gene that is regulated by three activator proteins is said to be under
A. individual control. B. combinatorial control. C. self-regulation. D. elastic control. E. triplet regulation.