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Potpourri
Dominance
Potpourri II
Gene interactions
Expressivity, penetrance and the environment
100
He was he father of modern genetics
Who is Gregor Mendel?
100
The type of inheritance that occurs with skin color, hair color, and height that results from a blending of separate genes that vary along a continuum.
What is polygenic inheritance?
100
Genes on the same chromosome are called this
What are linked genes?
100
This is the ability of one single gene to affect an organism in several or many ways.
What is pleiotropy?
100
The frequency with which individuals of a given genotype manifest at least some degree of a specific mutant phenotype is called this.
What is penetrance?
200
Inherited characteristics are are carried by dicrete units is the theory of genetics called
What is particulate inheritance?
200
When both traits show up in the phenotype it is called this
What is codominance?
200
The site at which a crossover and recombination occurs is called this
What is the chiasma?
200
When two separate genes control one trait, but one gene masks the expression of the other gene.
What is epistasis?
200
the range of expression of mutant genes is called this
What is expressivity?
300
The genes associated with extranuclear inheritance are found in these two locations.
What is the chloroplast and the mitochondria?
300
The type of dominance that occurs when the genes are blended.
What is incomplete dominance?
300
The result of a crossover is this
What is recombination?
300
When two genes interact to produce a novel phenotype it is called this.
What is collaboration?
300
This phrase means the development of something (ie: intelligence) is the result of genetic predisposition and the environment.
What is nature vs. nurture?
400
The varying of certain traits of a disease based on which parent it was inherited from.
What is genomic imprinting?
400
When there are more than two gene forms for a gene it is called
What is multiple alleles?
400
the number of autosomes in humans is this
What is 44?
400
when the expression of each depends upon the alleles of the other.
What are complementary genes?
400
An example of penetrance is this mutation where whites of the eyes appear blue.
What is blue sclera?
500
X inactivation leads to the formation of this
What is the barr body?
500
numerous blood types are examples of
What are multiple alleles (or codominance)
500
a family tree that indicates the phenotype of one trait being studied for every family member.
What is a pedigree?
500
The color of a flower in a sweet pea plant is determined by two dominant alleles A and B that code for the production of enzymes that catalyze two separate reactions in the production of purple pigment. In order for the pigment to be produced, both reactions must take place. This is an example of this
What is an example of complementary genes?
500
An example of expressivity is this disease where the numbers of fingers are 6 instead of 5, but the manifestation of the disease can range from an entire extra finger to a crooked little finger.
What is polydactyly?