Phenotype vs Genotype

Phenotype and Genotype

by Stacy King

​Genotype

• ​All the DNA

  • ​DNA is inherited from both parents

​Phenotype

• ​Genes that are expressed

  • ​DNA to mRNA to proteins

Multiple Choice

Having genes that make you more likely to be good at sprinting is an aspect of

• genotype

• phenotype

Multiple Choice

Usain Bolt trains daily to improve his muscular explosiveness. Muscle size is an example of

• genotype

• phenotype

​Genes are Inherited

• ​Female Parent 50%

• ​Male Parent 50%

​

​

​Genes and Expression

• ​2 or more Genes fight for expression

  • ​Dominant Genes (stronger)

  • ​Recessive genes (weaker)

​Mendelian Genetics

• ​Dominant Gene is always expressed

• ​Recessive is always hidden

Multiple Select

The two types of alleles are (select two)

• dominant

• doughnut

• expressive

• recessive

Dominant and Recessive Notation

• ​Dominant genes are in Capital letters

  • ​Purple is dominant

  • ​B represents the dominant gene

• ​Recessive genes are the same letter but in lower case

​Genotype Classifications

• ​​Homozygous Dominant

  • The Same

  • ​All Capital letters

  • ​

​BB

​TT

​GG

​FF

​HH

• ​Homozygous recessive

  • ​The Same

  • ​All Lower case letters

​tt

​bb

​gg

​hh

​ff

​Genotype Classifications

• ​Heterozygous

  • ​Different

  • ​The dominant is Capitalized and the recessive is lower case

  • ​The dominant is in front of the recessive gene

​Bb

​Tt

​Gg

​Ff

​Hh

Multiple Choice

Which of the following is heterozygous

• FF

• tt

• Gg

• RR

Multiple Choice

Which of the following is homozygous recessive?

• rr

• AA

• TT

• Ff

Multiple Choice

Mark is heterozygous. If B is for brown hair, and b is for blonde hair, what is Mark's genotype?

• BB

• bb

• Bb

• bB