________ is the enzyme that copies DNA during DNA replication. Thermostabile forms of this enzyme are essential for PCR
A) RNA polymerase
B) DNA ligase
C) DNA polymerase
D) RNA primase
E) DNA helicase
C
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A pied kingfisher in its first year of life helps in the feeding of three full siblings who would not have survived without the helper's efforts. What is its indirect fitness in its first year?
A) 0.25 B) 0.50 C) 0.75 D) 1.00 E) 1.50
The use of birth control pills (oral contraceptives) _____
A) reduces the incidence of ovulation B) prevents fertilization by keeping the sperm and egg physically separated by a mechanical barrier C) prevents implantation of an embryo D) prevents sperm from exiting the male urethra E) prevents oocytes from entering the uterus
Unique to flowering plants, the making of an embryo-nourishing ____ is an outcome of double fertilization
a. hypocotyl b. endosperm c. seed coat d. cotyledon e. epicotyl
Did Pangea or Gondwana form first?
What will be an ideal response?