Restriction enzymes are "restricted" in the sense that they normally work on only bacterial DNA
Indicate whether the statement is true or false
FALSE
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Predict what would happen if you used the pH indicator thymophthalein instead of phenol red in the above setup. Thymophthalein solution appears colorless below pH 9.3, but blue at higher pH.
What will be an ideal response?
A town has several lakes connected by small streams or creeks. All the trout within a single lake is considered a ________________. The trout in all of the lakes constitutes a ________________
A. metapopulation; local population B. local population; metapopulation C. corridor population; metapopulation D. metapopulation; corridor population E. equilibrium population; corridor population F. corridor population; equilibrium population
In garden peas, one pair of alleles controls the height
of the plant, and a second pair of alleles controls flower color. The allele for tall (D) is dominant to the allele for dwarf (d), and the allele for purple (P) is dominant to the allele for white (p). A tall plant with purple flowers crossed with a tall plant with white flowers produces 3/8 tall purple, 1/8 tall white, 3/8 dwarf purple, and 1/8 dwarf white. What is the genotype of the parents? What will be an ideal response?
Which of the following statements is true?
a. Arteries carry only oxygenated blood. b. The systemic circuit leaves the heart from the left ventricle. c. Blood passes through only one capillary bed on its trip through the systemic circuit. d. Platelets survive a longer time than erythrocytes. e. The heart is able to pick up the oxygen it needs as the blood flows through it.