Genetics
The study of how traits are passed from one generation to the next.
What is heredity?
He studied the principles of heredity by breeding pea plants.
Who is Gregor Mendel?
Alleles for a dominant trait are represented by this.
What are uppercase (or capital) letters?
The pod color of pea plants is controlled by only one gene that has two possible alleles is an example of this.
What is simple dominance?
The ratio of alleles in a population changes randomly over time is called this.
What is genetic drift?
Different forms of genes that result in different traits.
What are alleles?
What is a recessive trait?
A square diagram that is used to predict the genotypes of a particular cross of parents.
What is a Punnett Square?
Two traits produce a blended phenotype.
What is incomplete dominance?
An inherited trait that helps an animal survive to reproduce is called this.
What is an adaptation?
When Mendel crossed purebred pea plants having green pods with purebred pea plants having yellow pods, the offspring were all hybrid with this color pod.
What is green?
In a cross of one purebred parent (TT) with another purebred parent (tt), all offspring will show the __________ trait.
What is dominant?
This trait is listed second in a hybrid organism.
What is the recessive trait? (Tt - dominant first, followed by recessive)
Both traits are present in hybrid offspring, but without blending.
What is codominance?
The process through which organisms with certain adaptations survive to pass on their traits to a greater number of offspring than other organisms do is called this.
What is natural selection?
What is Dd (hybrid)?
An offspring will receive one _________ from each parent to determine its trait.
What is allele?
What is a genotype?
A gene has more than two possible alleles.
What are multiple alleles?
A population of foxes migrates into a desert region. The number of foxes with larger ears is most likely to do this.
What is increase?
If one parent contributes the A allele for blood type and the other contributes the B allele for blood type, their offspring would have this blood type.
What is AB?
True or False: A parent passes each allele to its offspring independently of all other alleles.
What is true?
This is the actual physical characteristic of an organism, such as black fur or smooth pea pods.
What is a phenotype?
Two or more genes interact to produce a single trait.
What is polygenic inheritance?
True or False: Natural selection cannot create new genetic information; it can only remove genetic information from a population.
What is true?