Heredity Question Preview (ID: 3231)


Punnett Squares, Genetics. TEACHERS: click here for quick copy question ID numbers.

An organism's physical appearance is its
a) heterozygous
b) genotype
c) phenotype
d) cross

A Punnett square shows
a) only the dominant alleles in a genetic cross
b) the likelihood that a particular event will occur
c) only the recessive alleles in a genetic cross
d) all the possible outcomes of a genetic cross

Factors that control traits are called
a) genes
b) pedigrees
c) mutations
d) parents

What is probability?
a) the results from a series of events
b) the number of times a coin will land heads up
c) the likelihood that a particular event will occur
d) genotype

If you cross a blue pet (BB) x a yellow pet (bb) what is the probability that the offspring will be blue?
a) 25%
b) 50%
c) 75%
d) 100%

What is a mutation?
a) Any change that is harmful to an organism
b) Any change in a gene or chromosome
c) A purebred
d) Any change in the genotype of a cell

What is a karyotype?
a) blood taken from a newborn baby
b) a picture of a baby before it is born
c) a picture of the chromosomes in a cell of the developing baby
d) the fluid that surrounds the baby before it is born

A female is represented by ____ and a male by _____.
a) XX, XY
b) XX, YY
c) XY, XX
d) Xx, Yy

Sex-linked genes are genes on
a) the Y chromosome only
b) the X chromosome only
c) the other 22 pairs of chromosomes
d) the X and Y chromosomes

A carrier is a person who has
a) one recessive and one dominant allele for a trait
b) more than 2 alleles for a trait
c) 2 recessive alleles for a trait
d) 2 dominant alleles for a trait

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