Which of the following is NOT one of the "Big Five" mass extinctions?
A) End-Permian (251 Ma)
B) End-Triassic (200 Ma)
C) Late Devonian (about 360 Ma)
D) Eocene-Oligocene (33.9 Ma)
E) Terminal Ordovician (444 Ma)
D
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Where would the CFTR gene not be heavily
expressed? a. Lungs. b. Reproductive system. c. Intestines. d. Brain. e. Skin
There are 5 independently assorting genes named A, B, C, D and E. If you bred individuals with these genotypes: AABbCcddEE x AaBbCcDDEE, what would be the expected proportion of offspring that would have the following genotype: AABbccDdee?
a) 0 b) 1/16 c) 1/8 d) 1/32
During the formation of an embryo, the hollow ball of cells having a fluid-filled cavity is called a
A. neurula. B. blastula. C. gastrula. D. blastocoel. E. morula.
After 3 replication cycles in PCR, there will be a total of 4 double-stranded DNA molecules.
Answer the following statement true (T) or false (F)