The 7 characters studied by Mendel are examples of single gene traits. They are called this because:
A: there is only a single genotype for all individuals.
B: distinct phenotypes are produced by variant alleles of a single gene.
C: there always is 1 dominant allele and 1 recessive allele for a given character.
D: all of the above
Answer: B: distinct phenotypes are produced by variant alleles of a single gene.
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The hypothalamus releases TRH which stimulates the anterior pituitary to release TSH. Which type of stimuli is this?
a. humoral stimuli b. neural stimuli c. hormonal stimuli d. negative stimuli
Which of the following is NOT produced by either the ovaries or testes?
a. testosterone b. estrogen c. progesterone d. follicle-stimulating hormone e. androgens
Which of the following correctly illustrates the sequence of the origin of modern groups of plants?
A) gymnosperms, ferns, bryophytes, angiosperms B) bryophytes, ferns, gymnosperms, angiosperms C) bryophytes, ferns, angiosperms, gymnosperms D) ferns, gymnosperms, angiosperms, bryophytes
Answer the following questions true (T) or false (F)
1. Streak plates are a useful way to obtain CFUs. 2. Agar is a useful compound in the microbiology lab because it is an excellent nutrient for bacteria. 3. Enrichment culturing may require use of controlled environmental conditions.