Punnet Square
What is a punnett square
A tool used for genetics
What is a Genotype
the genetic code that determines phenotype
What is a selective breeding
Choosing what animals to breed for a "perfect" combination
What is a probability
Probability is chances of something happening, an example is "you have a 100% chance of death while standing next to an exploding bomb"
What is a dominant Trait
Masks recessive traits.
Why was the punnett square made
to help determine phenotype's and genotype's by giving probability
What is heterozygous
Haveing two different alles
What happens if you inbreed
The animal can have non-contagious diseases or genetic disorders
What is the chance of s coin landing on heads
50.8% or 1/2 as a more well known awnser
What is a Recessive Trait
a trait that needs to be homozygous recessive for it to show in the phenotype
When was the Punnet Square made
1905
What do genotypes determine
Phenotype
What is a downside of selective breeding
Reduction in genetic differences.
Why is probability important in genetics
To help almost see the future in a way, it is not always accurate, but its theoretical.
What happens when there is a dominant and recessive trait in the same genotype (Heterozygos)
the dominant will show
Who made the square
Reginald Punnett
What is homozygous
Having two of the same alles
Why do we use selective breeding
to make the best breed
What is the possibility of breeding a dog to have fully fur if its dominant and the parents are Rr and rr
25%
Why does recessive not show with a dominant
because the dominant is more powerful then recessive and masks it
What is a punnet Square with multiple generations?
Multi Generational Punnet Square
Name all the genotypes
Homozygous dominant,Homozygous recessive, and heterozygous
Why is inbreeding bad
it significantly increases the risk of offspring inheriting two copies of a (harmful) recessive gene, one from each closely related parent
What is the chance of grandparents with rr and Rr to make grandchildren with rr
25%
Why is recessive masked by dominant
Recessive alleles are masked by dominant ones because dominant alleles have stronger proteins while recessive have weaker