Genotype vs Phenotype

Genotype and phenotypesYour genotype is your genetic code of your cells. This genetic code is responsible for many of your traits. The physical expression of your genotype is your phenotype.


Your genetic information is stored in your chromosomes on sections called genes.
A gene is a portion of DNA that codes for a trait.
The following picture illustrates this.
If you look at this drawing of a gene, the different sections are your genes.
In genetics you will encounter these three types of genotypes.
Homozygous dominant is written BB
Homozygous recessive bb
Heterozygous Bb
For each trait you get some information from mom and some from dad.
The different forms of the same trait are called alleles.
Take a look at the different hair texture. These different forms 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 this dog has a round nose, this cat has black hair. These are physical expression of the genetic code.

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For more Life Science videos and summaries see,
http://www.moomoomath.com/Midd....le-School-Science-an