Why are most X-linked disorders recessive?
a. X-linked dominant disorders are always
fatal to females
b. females only have one active X- dominant
disorders would render them sterile
c. dominant X-linked disorders are almost
always fatal to the male embryo
d. dominant X-linked disorders, regardless of
their overall effect, prevent proper sperm
formation
e. more than one of these is the reason why
most X-linked disorders are fatal
C
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Below is a pedigree of a fairly common human hereditary trait in which the boxes represent males and the circles represent females. Shading symbolizes the abnormal phenotype
Given that one gene pair is involved: (a) Is the inheritance pattern X-linked or autosomal, recessive, or dominant? (b) Give the genotype of each individual in the pedigree. If more than one genotypic possibility exists, present all possible alternatives.
The "ABCD" rule is used in the detection of ________, a type of skin cancer
Fill in the blank(s) with correct word