1) Mating a true-breeding pink rose plant with a true-breeding pink rose plant will produce: a) plants with pink, red, and white roses. b) only plants with pink roses. c) plants with red or white roses in a 3:1 ratio. 2) Mendel’s principle of segregation states that: a) alleles from one parent mask the expression of alleles from the other parent b) alleles separate from each other before forming gametes c) hybrids will express a phenotype intermediate between the two parental phenotypes d) true-breeding parents produce offspring of the same phenotype 3) A pear plant with the genotype Aa can produce gametes containing: a) either A or Aa. b) only the recessive a. c) either A or a. d) either AA, Aa or aa. 4) The physical appearance of an organisms for a given trait is termed: a) dominance. b) synapsis. c) genotype. d) phenotype. 5) The physical location of a particular gene on a chromosome is called : a) an allele. b) a locus. c) a trait. 6) ____________ are alternative forms of a gene that govern the same feature, such as eye colour, and occupy corresponding positions on homologous chromosomes. a) Alleles b) Loci c) Homozygotes 7) Using standard conventions for naming alleles, which of the following pairs is correct? a) Tt : recessive phenotype b) TT : heterozygous c) tt : homozygous d) tt : dominant phenotype 8) The separation of alleles of a gene takes place during: a) Anaphase of mitosis. b) cytokinesis of mitosis. c) Anaphase I of meiosis. d) Telophase II of meiosis. 9) Which of the following represents the possible genotype(s) resulting from a cross between an individual homozygous (BB) and one heterozygous (Bb) individual? a) BB and Bb. b) BB, Bb and bb. c) BB only. d) Bb only. 10) Which of the following represents the possible genotype(s) resulting from a cross between two individuals that are heterozygous (Bb)? a) BB and Bb. b) BB, Bb and bb. c) BB only. d) Bb only. 11) Which of the following represents the possible genotype(s) resulting from a cross between an individual heterozygous (Bb) and one that is homozygous (bb)? a) BB and Bb. b) BB and bb. c) BB only. d) Bb only. 12) Mating an individual expressing a dominant phenotype, but whose genotype is unknown, with an individual expressing the corresponding recessive phenotype is an example of: a) a heterozygous cross. b) a F1 cross. c) a parental cross. d) a test cross. 13) In peas, Mendel found that tall plants and yellow peas are dominant. The phenotype for a pea plant with the genotype TTyy would be: a) heterozygous. b) short with yellow peas. c) tall with green peas. d) tall with yellow peas. 14) In peas, Mendel found that tall plants and yellow peas are dominant. The phenotype for a pea plant with the genotype TtYy would be: a) heterozygous. b) short with yellow peas. c) tall with green peas. d) tall with yellow peas. 15) Which of the following represents the possible genotype(s) resulting from a cross between an individual homozygous for black hair (BB) and an individual homozygous for blonde hair (bb)? a) BB and Bb. b) BB only. c) Bb only. d) bb only.

Mendelian Inheritance

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