Double fertilization in an ovule of a flowering plant results in which of the following?
A. Two embryos
B. Two seeds in a fruit
C. One embryo and one endosperm
D. Two fruits joined together
E. One endosperm and one cotyledon
Ans: C. One embryo and one endosperm
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To remove noncoding sequences in the pre-mRNA of eukaryotes, multiple snRNPs combine with proteins to form a larger complex called the ___________ .
A. 5' cap B. introsome C. ribosome D. spliceosome E. 3' poly-A tail
Opportunists or opportunistic pathogens
A. are usually saprophytes. B. take advantage of special circumstances. C. are usually mutualistic. D. always cause disease.
_____ can be used to correct a genetic defect
a. Cloning vectors b. Gene therapy c. Cloning d. Xenotransplantation e. Cloning vectors and gene therapy f. all of these