Chapter 02: Transmission Genetics Flashcards
Males and females are affected in equal numbers. [Inheritance]
Autosomal dominant/recessive
Each individual who has the disease has at least one affected parent. [Inheritance]
Autosomal dominant
Either sex can transmit the disease. [Inheritance]
Autosomal dominant/recessive
If one parent is affected and the other is not, roughly half the offspring express the disease. [Inheritance]
Autosomal dominant
Two unaffected parents will not have any children with disease. [Inheritance]
Autosomal dominant
Two affected parents may produce unaffected children. [Inheritance]
Autosomal dominant
Individuals who have the disease are often born to parents who do not. [Inheritance]
Autosomal recessive
If only one parent has the disorder, the risk of passing it on depends on the genotype of the other parent. [Inheritance]
Autosomal recessive
If both parents have the disorder, all children will have the disorder. [Inheritance]
Autosomal recessive
If an affected child is born from unaffected parents, the risk to subsequent children is 1/4. [Inheritance]
Autosomal recessive
If the disease is rare in the population, unaffected parents of an affected child are more likely to be related to one another. [Inheritance]
Autosomal recessive
For the cross BBxBb, what are the expected genotype and phenotype ratios?
Genotype - 1:1:0
Phenotype - 1:0
What are the five features of Mendel’s experiments?
Controlled crosses, pure-breeding strains, single traits with dichotomous phenotypes, quantification of results, replicate- reciprocal- and test-crosses
Define replicate cross.
Repeating the same cross over and over
Define reciprocal cross.
Same genotypes are crossed, but sex of parents is switched
