Punnett Squares
what is "AA" and example of ?
Homozygous dominant
Define genotype and give a simple example using letters.
A genotype is and organism's genetic makeup. VV, Bb, MM, Mm are all examples of genotypes.
BB is the genotype. What is the alternate name of this genotype? What do we say instead of BB? B is dominant and the trait is pointy nose.
This genotype is homozygous dominant.
What does the word homozygous in genetics/heredity actually mean?
That there are two of the same alleles for a trait found on the gene.
Ron Rudgerson is the father of genetics
False it is gregor mendel
B = Green teeth b= yellow teeth
Which is the dominant trait ?
Green teeth
Define phenotype and give an example.
A phenotype is what is seen in an organism. Blue eyes can be a phenotype.
BB is the genotype. What trait is seen in the organism?
B is dominant and the trait is pointy nose.
b is recessive and the trait is rounded flat nose.
The dominant trait is seen and that trait is pointy nose.
What does the word heterozygous in genetics / heredity actually mean?
There are two different alleles for the trait found on the gene.
What is the name of the monk who studied the traits found in pea plants?
Gregor Mendal
B = Brown eyes b = blue eyes Which is the recessive trait ?
blue eyes
True or False Every phenotype has a genotype.
True - Phenotypes are impossible without a genotype.
rr is the genotype. What do we call this genotype rather than saying rr?
r = recessive for long legs
R = dominant for short legs
This genotype is homozygous recessive.
When you have a heterozygous individual what trait is seen? The dominant one or the recessive one?
The dominant trait is the phenotype for the heterozygous individual.
When an organism has a heterozygous genotype what is the phenotype? Is it dominant or recessive?
The phenotype is always dominant when the genotype is homozygous.
What is the purpose of a Punnett Square?
To determine the possible genotypes of the offspring.
Blue hair, green teeth, knobby knees, big feet, flat fingers are all examples of this? Hint: The answer is not characteristics or traits.
Phenotypes.
rr is the genotype. What is the phenotype for this genotype?
r = recessive for dimples
R = dominant for no dimples.
The phenotype is dimples and dimples are recessive.
In single-gene expressions write the dominant genotype(s) when you don't know the specific genotype. Use the letters B and/or b in your example.
There are two dominant genotypes when you don't know the dominant individual's genotype. These genotypes are BB and Bb. Homozygous dominant and heterozygous (dominant).
What classroom number are we in ?
1-235
B = Brown eyes b = blue eyes
what would "Bb" show in a phenotypic view ?
brown eyes
B = big feet, b = small feet what phenotype would be expressed with "bb"
small feet
Hh = the genotype. What do we call this genotype and what is the phenotype for this organism?
H = big hands
h = little hands
The genotype is known as heterozygous and the phenotype is big hands.
What does homozygous mean? What does heterozygous mean? Mention how the phenotypes are affected by the genotypes.
Homozygous means there are two of the same alleles on a gene (genotype) and the phenotype can either be dominant or recessive. Heterozygous means there are two different alleles (genotype) on a gene and the phenotype is dominant.
Describe the law of dominance ?
It states that the dominant trait if expressed will take over in the phenotypic view.