What is Heredity
Two questions: What is
The study of heredity
and
The passing of physical characteristics from parents to offspring
Heredity and Genetics
Probability
A number that describes how likely it is that an event occurs
Occurs when both alleles allele are dominant. Results in both alleles showing up
Codominance
Nitrogen Bases
Molecules of life
Two questions: What is
A specific characteristic such as stem height or seed color
and
The factors that control a trait.
Trait and Gene
Punnett Square
- A chart that shows all the possible ways alleles can combine in a genetic cross
Incomplete Dominance
Occurs when one allele is only partially dominant. Results in a blending or mixture of alleles.
Write the four nitrogen base letters and pairings
A <--> T . Apples in the Tree
C <--> G. Cars in the Garage
How many pairs of Chromosomes do you have?
23
Two questions: What is
An offspring that has the same alleles for a trait
and
An offspring that has two different alleles for a trait
Purebred and Hybrid
What percentage chance do you have when selecting the correct side of a coin toss?
50%
A trait that has three or more possible allele combinations (blood type)
Multiple Alleles
DNA Replication
Process of DNA making copies of itself
What forms the genetic code?
The order of the Nitrogen Bases along a gene forms a genetic code that specifies what type of protein will be produced
Two questions: What is
The process when a sperm unites with an egg cell
and
The different forms of a gene
Fertilization and Alleles
Homozygous and Heterozygous
Two identical alleles
and
Two different alleles
A roan cow being both brown and white spotted is an example of ___________
codominance
What is the purpose of DNA replication
How does DNA copy itself?
Because of the way the nitrogen bases pair up, the order of the bases in each new DNA strand exactly matches order in the original DNA strand
Two questions: What are the two opposite forms of alleles?
Dominant and Recessive
Two questions: What is
An organism’s genetic makeup or alleles
and
The physical appearance, or visible trait
Genotype and Phenotype
A White and Red flower produce a pink offspring is an example of ________
Incomplete Dominance
Incomplete Dominance
The sides of the DNA molecule are alternating ______ and _______ molecules
Sugar and Phosphate
Describe the process of DNA replication
1) DNA unzips
2) Bases are read
3) Bases are paired
4) New DNA strand is created for new cell