Punnett Squares
Create a Punnett square for the following cross...
GG x Gg
Offspring: GG, GG,Gg, Gg
How many parents are involved in Asexual Reproduction?
One parent.
If you are given a fraction 2/4 what percentage would that be?
50%
Define Phenotype and give one example.
A set of observable traits.
Blue flowers, curly hair etc
What name was Gregor Mendel given?
"Father of Genetics"
1.Create a Punnett square for the following cross.
Gg x gg
2.Calculate the % dominant phenotype and % recessive phenotype.
% Dominant Phenotype: 50%
% Recessive Phenotype: 50%
How many parents are involved in Sexual Reproduction?
Two parents.
If you are given the decimal 0.75
What would that decimal be in percent form?
75%
Define Genotype and list the three different genotypes names and representation in letter form.
An organisms genetic information
Heterozygous: Hh
Homozygous Recessive: hh
Homozygous Dominant: HH
What are genes?
1. Create a Punnett Square using the letter of your choice between a Homozygous Dominant Parent and a Homozygous Recessive Parent.
2. Calculate the % dominant phenotype and % recessive phenotype.
Offspring Possibilities: Gg (all 4)
% Dominant Phenotype: 100%
%Recessive Phenotype: 0%
What are the differences between offspring created by Asexual Reproduction and offspring created by Sexual Reproduction?
Sexual Reproduction: Offspring are different from each other.
Asexual Reproduction: Offspring are identical.
10/20 people can roll their tongue.
1.Convert the fraction into a decimal.
2. Convert the decimal into a percentage.
1. 10 divided by 20 = 0.50
2. 0.50 X 100 = 50%
50% of people can roll their tongue.
What are the definitions of a recessive allele and a dominant allele?
Dominant Allele: The allele that masks the effect of the recessive allele.
Recessive Allele: The allele that is masked by the dominant allele.
The patterns of inheritance using pea plants as a model
CO DOMINANCE: RR= Red Flowers Rr=Pink Flowers
rr=White Flowers
Create a Punnett Square for the following cross...
RR x Rr
List all possible phenotypes of the offspring (Names NOT percentages)
Offspring Possibilities: RR, RR, Rr, Rr
Two possible Red Flowers
Two possible Pink flowers
(HINT: Make sure to include what happens with the genes)
1.The singular parent copies it genes.
2. The parent splits in half
3. Two identical offspring now exist.
Using the following equation ( "/" mean division)
Equation:
# of people with trait/# of people in the total x 100 = _________%
Calculate how many people are right handed and how many are left handed...
30/100 people are right handed.
30 people are right handed/ 100 people total= 0.30
0.30 X 100 = 30% people are right handed
100-30 = 70% are left handed
What is the definition of Heredity?
Traits that have been passed down from biological parents to their offspring
What does the circle in a pedigree chart represent?
What does a square in a pedigree chart represent?
Circle: Female
Square: Male
CO Dominance EXAMPLE:
Homozygous Dominant= Brown
Homozygous Recessive= Blue
Heterozygous= Green
Create a Punnett Square using a letter of your choice for a Heterozygous and Homozygous Recessive cross.
List all possible phenotypes of the offspring (Names not percentages)
Offspring Possibilities: Gg, Gg,gg, gg
Possible Phenotypes: Two Green and Two blue
TRUE OR FALSE: In sexual reproduction ALL of one parents alleles are mixed with ALL of another parents.
FALSE. Half of parents alleles are passed down to reproductive cells (Eggs and Sperm). These will be randomly combined to create an offspring.
Using the following equation ( "/" mean division)
Equation:
# of people with trait/# of people in the total x 100 = _________%
Calculate how many people are right handed and how many are left handed...
5/20 people are right handed.
5 right handed/20 people total= 0.25
0.25 x 100 = 25% of people are right handed
100 - 25 = 75% people are left handed
What is it called when both the recessive phenotype and dominant phenotype are shown?
Codominance
Draw a pedigree chart that includes three generations.
You must have a set of three kids in one part of your pedigree chart.
Draw together...