Pattern baldness is a(n) ____ trait
a. X-linked
b. Y-linked
c. sex-linked
d. sex-limited
e. sex-influenced
e
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Agar is an excellent solidifying agent for microbiological media because
A. it is not degraded by most microorganisms and solid agar remains solid until the temperature is raised to 90°C, and liquid agar remains liquid if the temperature is lowered to 45°C are correct. B. it is not degraded by most microorganisms. C. solid agar remains solid until the temperature is raised to 90°C, and liquid agar remains liquid if the temperature is lowered to 45°C. D. agar provides an excellent source of nutrition for a variety of different microorganisms.
The reagent used in the "string test" is:
a. bile solubility. b. sodium deoxycholate. c. bile esculin. d. 0/129 (2,4-diamino-6,7-diisopropylpteridine).
White fruit color in summer squash is influenced by a dominant allele W, whereas colored fruit must
be ww. In the presence of ww, a dominant gene G results in yellow fruit, and if the individual had both recessive genes in the homozygous condition, it would be green. Give the F2 phenotypic ratios resulting from a cross of a pure-breeding white of genotype WW GG with a green. What will be an ideal response?
Some plants obtain nitrogen from symbiotic fungi or bacteria.What was the original source of N for the bacteria?
a. urea in the soil b. N2 gas c. carbohydrates in the soil d. lipids in the soil e. proteins in the soil