GENETIC VARIATIONS TAKS QUESTIONS
SPRING 2003 – 10:
(1) Dogs (Canis familiaris) are most closely related genetically to which of the following
organisms?
A African hunting dog (Lycaon pictus)
B* Gray wolf (Canis lupus)
C Grizzly bear (Ursus arctos)
D Domestic cat (Felis catus)
SPRING 2003 – 10:
(53) What trait will most likely be observed in all offspring of the above set of parents?
A* Green feathers
B Yellow feathers
C Long beak
D Short beak
APRIL 2004 – 10:
(40) According to the table, which of the following phenotypes would probably occur in
all the offspring from the parents shown above?
F Solid gray fur
G Striped gray fur
H* Green eyes
J Blue eyes
APRIL 2004 – 10:
(46) A pea plant with the genotype TtWW is crossed with a pea plant with the genotype
ttWw. How many different genotypes can be expressed in the offspring?
F1
G2
H3
J* 4
APRIL 2006 -10:
34 If a plant that is homozygous tall and wrinkled is crossed with a short, wrinkled plant,
which percentage of genotypes would most likely be found in the first-generation
offspring?
F 50% TTss, 50% ttSS
G 100% TtSs
H* 100% Ttss
J 50% TtSS, 50% ttSS
APRIL 2006 – 10:
55 Male sea lions can be twice the size of female sea lions. Which best explains the
difference in size between male and female sea lions?
A Orcas and sharks prey on sea lions.
B Male and female sea lions hunt on land and at sea.
C Sea lions hold their breath while diving.
D* Males compete with one another for females.