What is wood?
a. primary xylem
b. secondary xylem
c. secondary phloem
d. cork and cork cambium
e. periderm
b
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How long ago did the hominin evolutionary
line diverge from that leading to the great apes? a. about 3 million years ago b. between 10 million and 5 million years ago c. during the Eocene epoch d. less than 2 million years ago e. about 1.5 million years ago
Thalassemia is a recessive blood disease caused by reduced synthesis of one of the globin genes
While SCD is a mutation in the structure of hemoglobin, thalassemias can also be caused by mutations in the regulatory elements, causing too little globin to be produced and resulting in anemia. You've designed a DNA probe that you want to use to screen a family for a rare mutation in the ?-globin gene that causes thalassemia. First you will use the probe for northern blotting. What information will the northern blot tell you? A) whether the mRNA for ?-globin is being translated into functional proteins in a given cell population B) whether the amount of the ?-globin gene being transcribed (mRNA levels) is within normal range C) the size of the mRNA being transcribed D) the presence of a particular mutation by restriction fragment analysis E) both B and C are correct
Reinforcement is an evolutionary process that occurs in a hybrid zone in which parental species adapt
to two different communities, and the hybrids thrive in an area of transition between the parental communities. _______ Indicate whether the statement is true or false.
In transduction, two prokaryotic cells of different mating types come together and genetic material is
transferred from one cell to another. Indicate whether the statement is true or false.