Cinnabar eyes is a sex-linked, recessive characteristic in fruit flies. If a female having cinnabar eyes is crossed with a wild-type male, what percentage of the F1 males will have cinnabar eyes?
A) 0%
B) 25%
C) 50%
D) 100%
D
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Alternate forms of genes resulting from mutations are called
A. alterons. B. isoforms. C. lethal. D. alleles.
Parvoviruses are among the simplest known DNA viruses of animals.
Answer the following statement true (T) or false (F)
Humus often enhances the water and nutrient-retaining properties of topsoil. Which of the following might increase the humus content of a soil? Check all that apply.
A. phosphate fertilizer B. ground limestone C. leaf litter D. fish meal E. mushroom compost
You are interested in a single-stranded DNA molecule that contains the following sequence:
5?- .....GATTGCAT.... -3? Which molecule can be used as a probe that will hybridize to your sequence of interest? (a) 5?-GATTGCAT-3? (b) 5?-TACGTTAG-3? (c) 5?-CTAACGTA-3? (d) 5?-ATGCAATC-3?