10 out of 10 huntingtons disease is an autosomal

10 out of 10
Huntington’s disease is an autosomal dominant disorder. If two individuals
who are heterozygous at this locus breed, what are the chances that their
offspring will develop Huntington’s?

Question 13
Points: 10 out of 10
Genes A and B do NOT sort independently (because they are in the same
linkage group; assume recombination does not occur between these two
genes). An individual is AaBb and has the A and the b alleles on one copy of
the chromosome and the a and the B alleles on the other chromosome. How
many different gametes are produced?

 3
 4
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Correct. This individual will produce 2 different gametes, they are either Ab
or aB.
Question 14
Points: 10 out of 10
What would be the result of fertilization if egg and sperm were produced by
mitosis rather than meiosis?
Question 15

Points: 0 out of 10
In peas purple is dominant to white for flower color. A purple flower is
crossed with a white flower. All the offspring (over 100 plants) produce
purple flowers. What is the genotype of the purple flower?
 Pp
 pp
 PP
 Either PP or Pp
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Incorrect. This flower would be white.
Question 16
Points: 10 out of 10
Red (R) flower color is incompletely dominant to white (r) flower color. Two
pink flowers are crossed. What percentage of their offspring will be pink?

 50%
 25%
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Correct. Pink flowers have aRr genotype. A cross of Rr x Rr results in 50%
Rr (pink) offspring. The cross also produces 25% RR (red) and 35% rr
(white).
Question 17
Points: 10 out of 10
A female produces gametes
Question 18
Points: 0 out of 10

A single visible trait that results from more than one gene is called: