Unit 9 Heredity Question Preview (ID: 50103)


Review Heredity For 3rd Nine Weeks Exam. TEACHERS: click here for quick copy question ID numbers.

B represents brown eyes and b represents blue eyes. What is the genotype of a homozygous blue eyed woman?
a) BB
b) Bb
c) bb
d) bB

If two heterozygous individuals are crossed, what percent of their offspring are also expected to be heterozygous?
a) 75%
b) 100%
c) 0%
d) 50%

Which genotype would express a dominant phenotype?
a) bb
b) tt
c) Tt
d) ss

A man with type O blood is married to a woman with type AB blood. They have two natural children and one adopted child. Jada has type A blood, John has type O blood and Sally has type B blood. Which child is adopted?
a) Jada and John
b) Sally
c) Jada
d) John

A heterozygous tall pea plant is crossed with a short plant. The probability that an offspring will be tall is
a) 75%
b) 25%
c) 100%
d) 50%

The type of inheritance shown when a red-flowering plant is crossed with a white-flowering plant and pink-flowering plants are produced is _______.
a) incomplete dominance
b) inbreeding
c) codominance
d) polygenic inheritance

When roan cattle are mated, 25% of the offspring are red, 50% are roan, and 25% are white. Upon examination, it can be seen that the coat of a roan cow consists of both red and white hairs. This trait is controlled by ______.
a) multiple alleles
b) polygenic inheritance
c) codominant alleles
d) sex-linked genes

A mother and father both have AB blood types. What is the probability that their children will have blood type A?
a) 0%
b) 25%
c) 50%
d) 75%

What term do we use to describe the physical traits of an organism?
a) genotype
b) phenotype
c) heredity
d) genetics

Which of the following genotypes represent a heterozygous trait?
a) bb
b) tt
c) Tt
d) ss

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