The smith family is afflicted with a genetic disorder known as pinocchio nose syndrome, which causes affected adults to grow noses in excess of five inches long. 100 members of the smith family show up for a family reunion. of the fifty-three women, thirty-seven have unusually large noses. of the forty-seven men, thirty-six have an enormous nose. based on these figures, pinocchio nose syndrome is probably

a) dominant and sex-linked.
b) recessive and sex-linked.
c) dominant, but not sex-linked.
d) recessive, but not sex-linked.

Mention true or false : a) cholera is marked by acute diarrhea and no urination. b)mosquitoes are the source of dysentery germs.

Bisphenol a (often called bpa) is a chemical found in products that people use every day, from water bottles to food containers to children's toys. unfortunately, bpa leaches out of its many products and makes its way into our bodies. what are the health effects of bpa exposure? ongoing research is finding that elevated exposure to bpa can affect a wide variety of developmental and physiological processes, but one of the first studies of bpa's health effects came about because of a simple mistake in the lab. at a laboratory at case western reserve university in 1998, geneticist patricia hunt was making a routine check of her female lab mice. as she extracted and examined developing eggs from the ovaries, she began to wonder what had gone wrong. she noticed that many of the eggs showed problems with their chromosomes, and some had irregular amounts of genetic material, which can lead to miscarriages and birth defects in mammals. she learned that a lab assistant had mistakenly washed the plastic mouse cages and water bottles with a harsh soap, releasing bpa from the plastic. knowing that bpa is an endocrine disruptor, a chemical that can enter organisms and mimic hormones, hunt set out to discover whether it had adversely affected her mice.

Mineral rich water heated by newly found oceanic crust escapes through cracks in the ocean floor called