Which of the following is of least importance when concerning the preservation of ecosystems?
What will be an ideal response?
Preservation of ecosystems allows humans to exploit as many resources as possible.
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For each species, all _____ in the complete set of chromosomes is the _____
a. genomes; phenotype b. DNA; genome c. mRNA; start of cDNA d. cDNA; start of mRNA
Karyotype analysis ____
a. is a means of detecting and reducing mutagenic agents b. is a surgical technique that separates chromosomes that have failed to segregate properly during meiosis II c. can be used in prenatal diagnosis to detect chromosomal mutations and genetic disorders in embryos d. replaces defective alleles with normal ones e. is used in DNA analysis for paternity
Which is the most recent plant adaptation to have evolved?
A) Seeds B) Vascular system C) Flowers D) Cones
A special group of chemical substances that are used to treat diseases caused by microbes:
A) antibiotics B) synthetic drugs C) semi-synthetic drugs D) antimicrobial agent