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• The physical expression of this genetic code is your phenotype.
• The genetic information is stored in chromosomes on sections called genes.
• A gene is a portion of DNA that codes for a trait.
• When a gene is stained you can see lines or bands. These bands are the genes of a chromosome.
• For each trait you get some information from mom and some from dad.
• The different forms of the same trait are called alleles.
• The genotype can writen several different ways.
• Homozygous dominant is written with two capital letters for the two dominant alleles.(BB)
• Homozygous recessive has two recessive alleles (bb), and a heterozygous genotype has two different alleles. ( Bb )
• For example, there is different hair texture. These different forms of hair texture are alleles. It is still hair, just different forms.
• A dominant allele will cover up or mask a recessive allele.
• You will only get a recessive allele if both alleles are recessive.
• Your phenotype is the actual expression of the genotype.
• For example a dog has a round nose, and a cat may have black hair.
• These are physical expression of the genetic code.

# Genotype vs Phenotype

Genotype vs Phenotype
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Middle School Math and Science

## What is genotype and phenotype?

I love dogs. My current dogs are rescue dogs. If you look at my dog Rollins you can see some dalmation,lab, and other dog breds. This is because Rollins looks a little like his mother and a little like his father. The genetic code for the way he looks is called his genotype. The physical expression is his phenotype.