A couple, both carriers of cystic fibrosis (CF) alleles, can decrease their odds of having a child with CF by performing an in vitro fertilization procedure and screening the embryo for the CF alleles. This process is called
A. polymerase chain reaction.
B. gene therapy.
C. genetic typing.
D. preimplantation genetic diagnosis.
E. cloning and testing the unborn child.
D. preimplantation genetic diagnosis.
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A cotyledon is?
A. a fragment of tissue used for reproduction in bryophytes. B. the fruit produced by flowers of angiosperms. C. the first leaf structure to arise in the embryo of an angiosperm. D. a spore-like structure used for reproduction in plants. F. the zygote formed in ferns from the union of two gametes
Proteomics is the ________
A) changing of the terminal sequences of proteins to alter their function B) process of defining the complete set of proteins encoded by a genome C) harvesting of proteins from a cell to determine their economic value D) rational design of drugs based on protein structure E) manipulation of amino acid sequences in proteins to alter their function
The range of a population
A. only changes after a disaster has wiped out a former range. B. only changes due to iteroparity. C. is stable and almost never changes. D. changes over time due to external events. E. is very fluid and changes frequently in a random fashion.
Helical and icosahedral are terms used to describe the shapes of a virus envelope
Indicate whether the statement is true or false