Engelmann’s experiment was designed to
determine
a. what wavelengths comprise visible light.
b. what colors are contained in visible light.
c. if bacteria are attracted to oxygen.
d. if photosynthesis releases oxygen.
e. none of these
E
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What is one difference between the erythrocytes of mammals and other vertebrates?
a. Mammal erythrocytes lack nuclei. b. Mammal erythrocytes respond to changes in water concentration. c. Mammal erythrocytes are oval with swollen centers. d. Other vertebrates do not have erythrocytes. e. Other vertebrates use a respiratory pigment other than hemoglobin.
Consider a diploid population in which a single locus supports two alleles, A1 and A2 and three genotypes P = (p2), R = (2pq) and Q = (q2). Assuming the values of P and Q are known, what is the value of R?
a. p2 b. q2 c. P+Q d. 1-(P+Q) e. None of the above
The ability to taste PTC is a dominant trait. If a heterozygote woman has a child with a man who is not a taster, what is the chance their child will be a taster?
A. 50% B. 25% C. 100% D. 0% E. 75%
Horses and donkeys can mate successfully to produce mules, which are always sterile. Which genetic isolating mechanism prevents horses and donkeys from becoming a single species?
A) Hybrid infertility B) Mechanical isolation C) Behavioral isolation D) Temporal isolation E) Hybrid inviability