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Cell division and inheritance
Genes can exist as different forms called:
Huntington's disease is caused by:
a recessive allele
a dominant allele
Cystic fibrosis is caused by:
thick, sticky mucus
In a genetic diagram, how is a dominant allele shown?
As a bold letter.
As a capital letter.
As a lowercase letter.
Which statement is correct?
Carriers of Huntington's disease have two copies of a faulty recessive allele.
Carriers of cystic fibrosis have two copies of a faulty recessive allele.
Carriers of cystic fibrosis have one copy of a faulty recessive allele.