U
A variation of gene(s)
What are Alleles?
Heredity (Definition)
The passage of genetic instructions (traits) from parent to offspring
Dominant vs. Recessive
Dominant - Represented by a capital letter, will be expressed in a hybrid. Blocks out other genetics factors.
Recessive- Represented by a lower case, needs two copies to be expressed
Punnett Square (Definition)
A Model used to predict possible genotypes and phenotypes of offspring.
We call the genetic make up of the individual, represented by a set of letters -
What are Genotype?
Was the first studied heredity and the passage of traits from one generation to the next.
Who is Gregor Mendel?
Genes vs Alleles
(Double Or Loss)
Genes-Section on a chromosome that has genetic information for one trait
Alleles-Different form of a gene
A black chicken (BB) is crossed with a White chicken (ww). What is the phenotype off all the offspring? ( Ex Points, what's the genotype?)
100% Black chickens (Bw)
A Red Snap Dragon breeds with a White Snap Dragon and all the offspring are Pink Snap Dragons. This is known as -
Inherited traits that children get from their parents come from-
What are Genes?
The type of organism did Gregor Mendel use to first study heredity
What are Pea Plants?
Genotype vs. Phenotype
Genotype- Two alleles that control the phenotype of a trait
Phenotype- How a trait appears, is expressed, or visual seen.
A Punnet Square use capital and lowercase letters to represent -
Capital Letters = Dominant Trait
Lower Case Letter = Recessive Trait
Some genes can be hidden or covered up by another. These are considered to be-
(Double or Loss)
Recessive
The threadlike X structures of DNA that carry genes -
What is a Chromosomes?
The physical trait observed in an offspring is known as it's -
Phenotype
Codominance vs. Incomplete dominance
Codominance- Occurs when both alleles can be observed in the offspring’s phenotype
Incomplete dominance- Interaction in which both alleles of a gene are partially expressed, often resulting in an intermediate or mixed phenotype of both alleles.
Having dimples is dominant (D). Not having dimples is recessive. (d) Both parents are heterozygous for the dominant trait. What percentage of the children will NOT have dimples?
25%
An exception to Mendelian traits; Occurs when both alleles can be observed in the offspring's phenotype
What is codominance?
Organism's genetic material
What is DNA?
The number of chromosomes humans have
What is 46 or 23 pair?
Homozygous vs Heterozygous
Homozygous-Having two identical alleles of a particular gene or genes.
Heterozygous - Having two different alleles of a particular gene or genes.
Long ears are dominant (E) in rabbits. If one parent is homozygous dominant for the long ear trait and the other homozygous recessive (e), what is the only possible genotype of the offspring?
Ee
Two dark brown rabbits have four offspring. Three of the offspring are dark and one is white. What does this tell you about the parents' genes for fur color? (3 Things, for every one your groups get I'll add an additional 600 points to your score)
Dark brown is dominant.
white fur is recessive.
Both parents are heterozygous.