Describe some of the environmental risk factors associated with ASDs
What will be an ideal response?
Potential answers include the uterine environment during pregnancy, complications during pregnancy and delivery, maternal exposure to thalidomide, and maternal development of rubella (German measles) during pregnancy. Vaccines have been discussed as a potential environmental trigger, but there is no scientific evidence to support this theory.
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According to modern phylogeny, based on such data as the arrangement of genes in mitochondrial
DNA and the sequences of ribosomal RNA genes, hexapods are most closely related to which of the following groups?
a. trilobites b. myriapods c. crustaceans d. annelids e. chelicerates
Which of the following statements is TRUE?
a. Once a person reaches maturity, cell division stops except to repair wounds. b. Cell division in an adult signifies cancer. c. Some specific cells throughout the body retain the ability to divide and replace themselves. d. Growth continues throughout the life of an adult human. e. All cells retain the ability to divide even after the organism reaches maturity.
The search for a(n) ____ treatment led to the discovery that DNA carries genetic information
a. pneumonia b. AIDS c. tuberculosis d. influenza e. SARS
In the early 1900s, two scientists noted there were many more genes than chromosome pairs, thus setting the stage for the suggestion that some gene loci might be linked during meiotic processes. Who were these two scientists?
What will be an ideal response?