Which of the following diseases is NOT correctly matched to its reservoir?
A) tuberculosis — cattle
B) histoplasmosis — soil
C) psittacosis — parakeets
D) coccidioidomycosis — air
E) pneumocystis — humans
D
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Mendel's dihybrid crosses, but not his
monohybrid crosses, show that a. some genes are linked together. b. the two alleles controlling a trait are divided equally among the gametes. c. alleles for different traits are inherited independently. d. one of the pair of alleles is dominant to the other. e. the crossing of two different homozygous forms will not produce any offspring in the first generation that will look like either of the parents.
Which mode of inheritance results in the phenotype of a heterozygote being indistinguishable from that of an organism homozygous for the dominant allele?
A) complete dominance B) incomplete dominance C) codominance D) epistasis E) incomplete penetrance
A phosphorus shortage in soil would make it difficult for plants to produce:
A. amylose B. cellulose C. DNA D. starch
Organized sports can be very competitive, even for young children. Little League players are often pushed to develop such skills as perfecting a curve ball. However, repeatedly trying to throw a curve ball can cause injury in growing bone. What part of
the bone is most likely affected? What will be an ideal response?