Most bacteria reproduce by
A) aerial hyphae.
B) fragmentation.
C) mitosis.
D) binary fission.
E) budding.
D
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A 13-year-old girl presented to her physician complaining of being tired, having a mild sore throat and fever. She appears to have a grey coating on her tonsils when examined by the physi-cian. The most logical etiologic agent associated with the patient's illness is:
a. Streptococcal pharyngitis. b. diphtheriae. c. scarlet fever. d. Tonsillitis.
Which phyllotaxes allow for leaves on a stem to lie flat without bending or breaking?
a. spiral and opposite b. alternate and whorled c. alternate and opposite d. spiral and whorled
Oogenesis normally produces ____ gamete(s) from one germ cell.
A. one B. two C. three D. four
In Drosophila, there is an autosomal gene that helps control the normal embryological development of larval flies. The normal allele is "bcd+" and the mutated version which creates an embryo with an abnormal body plan called bicoid is "bcd". If a mother possesses just one copy of the bcd+ gene, her offspring will develop normally regardless of the offsprings' genotype. Two flies who are both heterozygous for this gene are mated. What would be the expected phenotype(s) of their offspring in terms of development?
a) 3/4 of the offspring will have the normal body plan and 1/4 will be biocid. b) All of the offspring will develop the normal body plan. c) All of the offspring will be bicoid. d) 3/4 of the offspring will be bicoid and 1/4 will have the normal body plan.