Definitions
what refers to the observable traits or characteristics of an organism
Phenotype
Female Gametes carry which Chromosome
X
Why can’t women inherit y-linked genes
can’t inherit Y-linked genes because they do not have a Y chromosome
How are “hybrid” genotypes expressed?
it is a heterozygous genotype Bb
What is the gene that dictates fur color in Labradors
The gene that dictates fur color in Labradors is called the "B" gene, which controls black fur and yellow fur.
what is the genetic makeup of an organism—the specific set of genes or alleles it carries
Genotype
Male gametes carry which chromosome
Y
Why are men more likely to be color blind
Men only have one X chromosome therefore only need one recessive X
How are “purebred” genotypes expressed
it is a homozygous genotype
Ex. BB and bb
What is the gene that dictates expression in labradors?
Additionally, there is another gene, the "E" gene, which influences the expression of the fur color.
what is a specific characteristic or feature of an organism that can be observed or measured.
Trait
Females have which type of chromosomes at the 23rd pair
XX
What must a female inherit to be color blind?
she must inherit two copies of the color blindness gene—one from each parent
Define codominance and give an example
Codominance is a type of inheritance where both alleles in a gene pair are fully expressed in the organism, meaning that neither allele is dominant or recessive
Ex. Blood types
The scientist who used pea plants to easily observe traits and cross-bred in a controlled environment
Gregor Mendel
what is a different version or form of a gene.
allele
Males have which type of chromosomes at the 23rd pair
XY
What is hemophilia? How does one inherit the gene?
Hemophilia is a genetic disorder where the blood doesn’t clot properly.
Hemophilia is usually X-linked recessive, meaning the gene is found on the X chromosome.
Define incomplete dominance and give an example
Incomplete dominance is a type of inheritance where neither allele is completely dominant over the other. As a result, the heterozygous phenotype is a blend or intermediate between the two homozygous phenotypes.
Ex. Snapdragon flower color (red + white = pink)
Name this dawg:
15 major champion
82 PGA tour wins
Career Grand Slam
Youngest to ever win a major in Golf
Tiger Woods
what are traits that are controlled by two or more genes, often located on different chromosomes.
Give an example
Polygenetic traits
(Skin color, eye color, weight)
Why are females sometimes called “carriers” for X-linked genes?
they can carry one copy of a recessive gene on one of their X chromosomes without showing symptoms of the trait or disorder
Draw a Dihybrid Cross with BbEe and bbee.
what is the ratio?
(show answer)
Describe artificial selection and give an example
Artificial selection (also known as selective breeding) is the process in which humans intentionally breed organisms with specific traits in order to produce offspring that have those desired traits.
Ex. Breeding dogs for specific purposes
Name this Dawg:
Considered Greatest hockey player of all time
Known as Great One
Has 4 Stanley cup wins all for Edmonton Oilers
Wayne Gretzky