1. What do the terms homozygous and heterozygous describe for a single gene?
2. When does a recessive trait appear in an individual?
3. What is a single-factor cross designed to test?
Alleles — definition?
Alternative forms of a gene.
Dominant vs recessive — difference?
Dominant shows in heterozygotes; recessive only in homozygotes.
Homozygous vs heterozygous — meaning?
Homozygous has identical alleles; heterozygous has different alleles.
Recessive trait — when observed?
Only when homozygous recessive.
Dominant trait — when observed?
In heterozygous or homozygous dominant.
Single-factor cross — purpose?
To study inheritance of one gene.
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