An individual who is at risk of passing a genetic defect onto his or her offspring would most likely undergo ____
a. genetic testing
b. genetic screening
c. enzyme replacement therapy
d. preimplantation genetic diagnosis (PGD)
e. amniocentesis
a
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Human development ____
a. is complete at birth b. begins at puberty c. is complete at puberty d. occurs only during adult life e. begins at conception
Crossing over occurs between the ________
a. nonsister chromatids of a pair of homologous chromosomes b. sister chromatids of a pair of homologous chromosomes c. nonsister chromatids of a pair of non-homologous chromosomes d. sister chromatids of a pair of non-homologous chromosomes
How does habitat fragmentation affect biodiversity?
a. As long as the fragments are of good quality habitat, biodiversity will not be affected. b. Habitat fragmentation increases biodiversity because it reduces entry of exotic species. c. Habitat fragmentation is a threat to biodiversity because small habitat patches sustain only small populations. d. Habitat fragmentation increases biodiversity because adaptation to local conditions stimulates evolution. e. Habitat fragmentation connects terrestrial and aquatic habitats.
All EXCEPT which of the following statements
concerning fungal body plans are true? a. A mesh of hyphae is called a mycelium. b. Branching filaments are called hyphae. c. Most fungi are unicellular. d. Cell walls contain chitin. e. Some filaments become modified into reproductive structures.