What is an allele?
Q: What is an allele?
A: An allele is a form of a gene at a particular position on a chromosome.
Q: How many sets of chromosomes do typical plants and animals have?
A: Typical plants and animals have two sets of chromosomes, one set inherited from each parent.
Q: Are organisms with two sets of chromosomes called diploid or haploid?
A: Organisms with two sets of chromosomes are called diploid.
Q: How many alleles do diploid organisms have at each gene locus (except on the sex chromosomes)?
A: Diploid organisms have two alleles at each gene locus (except on the sex chromosomes).
Q: What is a homozygote?
A: A homozygote is an individual with two identical alleles at a particular gene locus and is said to be homozygous.
Q: What is a heterozygote?
A: A heterozygote is an individual with two different alleles at a particular gene locus and is said to be heterozygous.
Q: Where is the bit of coding DNA located in an allele?
A: The bit of coding DNA in an allele is located at a particular position on a chromosome at a gene locus.
