The expected ratio of phenotypes among the progeny of a test cross is 1: 1: 1: 1. out of 200 total resulting progeny, 48 occur in one of the four phenotypic classes. given this information, which of the following must also be true? view available hint(s) the expected ratio of phenotypes among the progeny of a test cross is 1: 1: 1: 1. out of 200 total resulting progeny, 48 occur in one of the four phenotypic classes. given this information, which of the following must also be true? since 48 is so close to the expected value, there is no need to calculate chi square before drawing a conclusion about the ratio. the value of observed - expected for this cell = -2. at least one additional cell must also contain a count of 48. the progeny of this cross do not conform to a 1: 1: 1: 1ratio.

answer: andy garner, a 17-year-old who decided to become a human guinea pig in 1965 and go without sleep for 11 days. by the second day his eyes had already stopped focusing, and he lost the ability to identify objects by touch. by day three he was moody and uncoordinated and by the end he had trouble with short term memory and had even started hallucinating.

and a rare genetic mutation called fatal familial insomnia, where people can’t sleep at all, gets progressively worse over months or years and leads to dementia and death.

a devoted soccer fan died after staying awake 48 hours to watch the world cup, she said. ‘while his untimely death was due to a stroke, studies show chronically sleeping fewer than six hours a night increases stroke risk by 4 1/2 times compared with those getting a consistent seven to eight hours.'

*shorten it up as your wish*

(i have divided it into 3 simple paragraphs)