a. found on the Y chromosome
b. passed on to the daughters from their fathers
c. passed on to the sons from their mothers
d. expressed more commonly among females becuase they have two sex chromosomes
e. may be carried but not expressed by males
2006-11-15 13:01:52 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Biology
C. Passed on to the sons from their mothers
Sex-linked genes are more commonly expressed in males as they only have one X chromosome. In females, it takes two recessive genes to show up because it is possible for them to have both a dominant and recessive gene. If a female has even just one recessive gene and passes it to her son, it will be expressed.
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2006-11-15 13:08:16 · answer #1 · answered by toothpickgurl 3 · 0⤊ 0⤋
Id say 25 to 50 percent. Not sure about the probability equation. Although, id lean towards 1 in 4, since CF affects 25,000 newborns a year. The grandparents don't have a direct influence on the offspring's, but they give the parents the genes, so they play a major role in the acquisition of CF. That's why CF is coined a genetic autoimmune disease. See a genetic consular.
2016-03-28 21:56:00 · answer #2 · answered by Anonymous · 0⤊ 0⤋
first of all a gene cant be on the y chromosome for males!!
2006-11-15 13:06:24 · answer #3 · answered by Anonymous · 0⤊ 1⤋
c
2006-11-15 13:56:41 · answer #4 · answered by lil 4 · 0⤊ 1⤋
c.
2006-11-15 13:10:01 · answer #5 · answered by Anonymous · 0⤊ 1⤋