Real World Example
What was the purpose of creating the featherless chickens?
To keep the chickens cool in warmer climates.
A Punnett Square has how many boxes?
4
Genotype
the genetic make up of an individual
phenotype
the physical quality of an individual
What is the difference between genotype and phenotype?
Genotype is the genetic makeup (the alleles), while phenotype is the physical expression of those
What is the purpose of the Belgian blue?
To create a higher percentage of meat on the animal.
Define a Punnett Square
A tool used to predict the traits of offspring.
homozygous
alleles are the same
heterozygous
alleles are different
How can knowing an animal’s genotype help in selective breeding?
It helps predict which traits offspring will inherit, allowing breeders to select for desirable characteristics.
What is the purpose of the transgenic glow-in-the-dark rabbits?
To prove that this is possible - cancer and medical research was listed as well.
A dog with heterozygous trait for short fur (Ss) and a dog with a homozygous dominate trait for short fur (SS) have four babies. Their babies have a _______ chance of having long fur.
0%
Complete Dominance
A form of inheritance in which one allele completely masks the effect of another allele in the phenotype.
recessive
traits that are only expressed if both alleles are recessive
What is a trait?
A trait is a characteristic or feature of an animal, such as size, color, or behavior.
What is the purpose of the super salmon?
To increase efficiency and speed of fish farming.
Two monkeys with heterozygous dominate traits for long tails have four babies. what's the chance of them having babies with short tails?
25%
alleles
what make up your gene
Incomplete Dominance
A genetic situation in which one allele does not completely dominate the other allele, resulting in a phenotype that is a blend of the two.
What does DNA stand for?
DNA stands for Deoxyribonucleic Acid. It carries the instructions for all living things.
What is the purpose of the Enviropig?
To reduce the levels of phosphorus in swine manure.
A heterozygous buffalo for long fur and a homozygous recessive buffalo for short fur have four babies together. What are their phenotypes.
2 have long fur
2 have short fur
co-dominace
both genes are dominate and will be equally expressed if passed to offspring
Selective Breeding
The process by which humans breed specific animals for desired traits.
How might mutations impact an animal’s genetics—positively or negatively?
Mutations can introduce beneficial traits or cause harmful defects depending on the change and where it occurs in the DNA.