genetics and mendelian inheritance

What is a locus?

• different versions of the same gene

• a heritable feature

• specific locations on a chromosome where a gene is found

• a specific characteristic of an individual

What is a cross between two true-breeding parents that express different traits for two characteristics

• monohybrid cross

• test cross

• dihybrid cross

• reciprocal cross

Which of the following is not a law of inheritance discovered by mendel?

• Law of segregation
• Law of co-dominance
• Law of independent assortment

what does the term true-breeding mean?

• organisms that are heterozygous for genes

• organisms that are homozygous for genes

• organisms with a dominant phenotype

• organisms with a recessive phenotype

What is the F2 generation phenotypic ratio from 2 true breeding parents (AA x aa)?

• 1:1

• all the same phenotype

• 1:2:1

• 3:1

If a dominant allele is red (A) and a recessive allele is white (a) (these traits observe complete dominance), what is the genotype of a red flower?

• AA

• Aa

• aa

• not enough information to answer

What type of disease does this pedigree show?

• autosomal dominant

• autosomal recesive

• x-linked dominant

• x-linked recessive

What type of disease does this pedigree show?

• autosomal dominant

• autosomal recessive

• x-linked dominant

• x-linked recessive

are two chromosomes with 45% recombination linked?

• yes

• no

do linked genes have any recombinations?

• yes

• no