An organism that has one copy of a recessive allele that causes a genetic disease in individuals that are homozygous for this allele. A person who possesses (but does not display) a genetic disease that can be passed down to his/her/zir offspring.
When the gene controlling the characteristic is located on the sex chromosome and therefore associated with gender
The physical location of a gene on an organism's chromosomes.
Incorrect/unequal division of chromosomes into gametes
One specific form of a gene, differing from other ones of it by one or a few bases only and occupying the same gene locus as other alleles of the gene
The "seen" characteristics of an organism. Based on it's genotype.
Having two identical alleles of a gene
An allele that only has an effect on the phenotype when present in the homozygous state. Able to be covered up by a dominant trait.
• Packages of very tightly coiled DNA, which is wrapped around histones.
• Made of DNA and proteins.
An organism that has one copy of a recessive allele that causes a genetic disease in individuals that are homozygous for this allele. A person who possesses (but does not display) a genetic disease that can be passed down to his/her/zir offspring.