This is the genetic material for all cellular organisms and some viruses.
A. chromatin
B. RNA
C. protein
D. DNA
Answer: D
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Spirilla and spirochetes are closely related bacteria that exhibit a unique corkscrew motility
Indicate whether the statement is true or false.
If an allele is dominant, then:a
its phenotype is only expressed in heterozygous individuals. b. its phenotype is expressed only in homozygous individuals.. c. one allele can mask the expression of a recessive allele in a hybrid. d. its phenotype is always expressed in all generations. e. its phenotype is more beneficial than the recessive phenotype.
One inanimate source of illness is fumes, which can gain access to the body through:
a. Skin B. Infection C. Inhalation and skin D. skin and digestive skin
Which of the following is found in "chain-like" strings of coccus shaped bacteria?
a) streptococcus b) staphylococcus c) gonococcus d) diplococcus e) vibrio