What are the different forms of a gene called?
Genotypes
Alleles
Chromosomes
In a genetic diagram, how is a dominant allele shown?
As a bold letter.
As a lowercase letter.
As a capital letter.
Which of these represents someone who is heterozygous for a certain gene?
Hh
HH
hh
Polydactyly is an inherited condition, due to a dominant allele, causing extra fingers or toes. What is the chance of a child having polydactyly if their parents are Pp and pp?
25%
50%
75%
What is a phenotype?
All the genes in an organism.
All the genes and characteristics shown by an organism.
The outward appearance of a gene.
Which of these represents someone who is homozygous dominant for a certain characteristic?
What does a pedigree diagram show?
How a genetic condition is inherited.
How a communicable disease is passed from person to person.
The gametes available in a population.