Genetics Review Question Preview (ID: 18641)


FHS Biology. TEACHERS: click here for quick copy question ID numbers.

Where is our entire genetic code located?
a) DNA
b) Cytoplasm
c) tRNA
d) Endoplasmic Reticulum

A unit of information about a specific trait (a section of DNA) is called a(n)...
a) gene
b) locus
c) allele
d) phenotype

A certain form of a gene represented by ONE LETTER (a or A for example) is called a(n)
a) gene
b) locus
c) allele
d) phenotype

When 2 alleles are the same, we say that an individual is ___________ for a trait.
a) homozygous
b) heterozygous
c) dominant
d) recessive

When 2 alleles are different, we say that an individual is ___________ for a trait.
a) homozygous
b) heterozygous
c) dominant
d) recessive

An allele that we use a capital letter to represent, which RULES over other in giving it's trait is referred to as…
a) homozygous
b) heterozygous
c) dominant
d) recessive

An allele that we use a lower case letter to represent, which gets overpowered if paired up with a dominant one is referred to as…
a) homozygous
b) heterozygous
c) dominant
d) recessive

Which of the following represents a GENOTYPE?
a) H
b) h
c) Hh
d) Hairy nostrils

Which of the following represents a PHENOTYPE?
a) H
b) h
c) Hh
d) Hairy nostrils

Which of the following represents a genotype that is homozygous recessive?
a) AA
b) Aa
c) aa
d) A

Which of the following represents a genotype that is homozygous dominant?
a) AA
b) Aa
c) aa
d) A

Which of the following represents a genotype that is heterozygous?
a) AA
b) Aa
c) aa
d) A

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