yu eqct X-inkad ressive disenders to be mmore common in males or females? Why? 1
ID: 254422 • Letter: Y
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yu eqct X-inkad ressive disenders to be mmore common in males or females? Why? 14. 5 15. Tonigse roling is the result of an autosomal doeminant gene (R). Martin is a man who is color blind and who can act roll his soegae murries Mutha Martha is hetervry gous dominant for normal color vision and whe cen roll her songoe, but ber mocher coald not. erMr and Martin h Whar ill be the gesopes) and phenctypes) of their children? c Whut is the probublity they have a child that is colorblind? d What is the probutility hey will have a child who can roll their tongue with colorblindness? e What is the probublity they bave a girl that is a carrier and tongue roller? f What is the probubility they have a child that is unable to rell their tongue? 16. Scott has blood type A and Ethyl has B. Fred's mother was O. Ethyl's parents were both AB. a What is the genotype for Ethyi and Scott b. They have a kid What is the chance the kid is type AB? pe to deternine who belongs to which set of parents. Parents A: Fred's blood type is A and Wilma's is AB. Parents B Barney's is O and Berry's is B. Pebbles is type O and BamBam is B. which kid belongs to ? hich parent?Explanation / Answer
(13)Since females have two copies of the X chromosome and males have only one X chromosome, males are always affected once they inherit the disease-causing X allele.Whereas females suffer only when they receive two sets of an affected allele, and are normal when they are carriers. Therefore, X-linked recessive diseases are more common among males than females.
(14)X-linked dominant traits are more commonly found in females than males (twice as common in rare traits, since females have two chances to receive an X with the mutant allele, while males have only one).
(15)
Color blindness is X linked recessive inheritance
Martin is colorblind and can’t roll his tongue= XcYrr
Matha is heterozygous for color blind allele and can roll toungue = XcXRR or XcXRr
There are two scenarios
XcYrr (Martin)x XcXRR (Martha)
Children= XcXcRr, XcXRr, XcYRr, XYRr (all of them can roll their tongue, 50% are color blind)
XcYrr (Martin)x XcXRr (martha)
XcXcRr, XcXc rr, XcXRr, XcXrr, XcYRr, XcYrr, XYRr, XYrr
50% can roll their tongues, 50% are color blind
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