A Barr body refers to: None of the answer options are correct. spore formation in yeast a sex-linked trait in cats. an inactivated X chromosome. a recessive trait in fruit flies.
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QUESTION 5 The fact that somatic cells inactivate all but one X chromosome Is the reason that female cells have Barr bodies Explains why only female cats can have a tortoiseshell pattern Would explain the presence of Barr bodies in men with Klinefelter's syndrome All of the above QUESTION 6 Polyploidy Is very rare in animals Involves an extra chromosome Is very common in plants Both (A) and (C)
Sri K.
Barr bodies are a. genetically active X chromosomes in males. b. genetically inactive X chromosomes in females. c. genetically active Y chromosomes in males. d. genetically inactive Y chromosomes in females
Consider this statement: "Humans are much more able to tolerate missing a sex chromosome than they are able to tolerate missing an autosome." Conduct research to understand what a "Barr body" is. Do not submit an answer with a lot of scientific jargon. Using basic biology vocabulary, explain "Barr body" in your own words. Respond directly to the statement above with regards to females. Dr. Murray Barr (1908-1995) was a Canadian researcher who co-discovered Barr bodies. Some of the work he did involved studying coat (fur) color in calico cats. Coat color in these cats is determined by a sex-linked gene, but it also involves Barr bodies. Using your knowledge of genetics, describe how calico cats get their color. Compare male and female calico cats.
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