6 Written Questions

1. the first generation of offspring obtained from an experimental cross of two organisms
2. the second generation of offspring, obtained from an experimental cross of two organisms; the offspring of the F1 generation
3. describes an individual that has identical alleles for a trait on both homologous chromosomes (both alleles are alike)
4. a graphic used to predict the results of a genetic cross (predict the offspring)
5. a cross between individuals that have different alleles for the same gene (two characteristics are tracked)
6. one of the alternative forms of a gene that governs a characteristic, such as hair color (genes occur in pairs-two letters, each letter is an allele)

6 Multiple Choice Questions

1. a relationship in which one allele is completely dominant over another
   1. Incomplete dominance
   2. Complete dominance
   3. Dominant
   4. Punnett Square
2. the ratio (fraction) of the genotypes that appear in offspring
   1. Genotype
   2. Phenotypic ratio
   3. Genotypic ratio
   4. P Generation
3. a condition in which a trait in an individual is intermediate between the phenotype of the individual's two parents because the dominant allele is unable to express itself fully (different dominance)
   1. Dominant
   2. Complete dominance
   3. Incomplete dominance
   4. Punnett Square
4. describes the allele that is fully expressed when carried by only one of a pair of homologous chromosomes (brown eyes)
   1. Homozygous
   2. Dominant
   3. Genotype
   4. Allele
5. describes a trait or an allele that is expressed only when two recessive alleles for the same characteristic are inherited (blue eyes, shows up in the F2 generation)
   1. Phenotype
   2. Recessive
   3. Allele
   4. Genotype
6. an organism's appearance or other detectable characteristic that results from the organism's genotype and the environment
   1. Homozygous
   2. Genotype
   3. Phenotype
   4. Recessive

6 True/False Questions

1. True-Breeding → describes a trait or an allele that is expressed only when two recessive alleles for the same characteristic are inherited (blue eyes, shows up in the F2 generation)

   True        False

2. Heterozygous → describes an individual that has identical alleles for a trait on both homologous chromosomes (both alleles are alike)

   True        False

3. P Generation → the first generation of offspring obtained from an experimental cross of two organisms

   True        False

4. Phenotypic ratio → the ratio (fraction) of the genotypes that appear in offspring

   True        False

5. Monohybrid Cross → a cross between individuals that have different alleles for the same gene (two characteristics are tracked)

   True        False

6. Genotype → the entire genetic makeup of an organism; also the combination of genes for one or more specific traits (uses letters in problems)

   True        False