AP Biology- Genetics and Heredity- 10 Questions AP Biology- Genetics and Heredity – 10 Questions 1. What is the term for the alternative forms of a gene that occupy the same position on homologous chromosomes? a) Alleles b) Genotypes c) Phenotypes d) Dominant genes 2. In the context of Mendelian genetics, what is the term for an individual with two identical alleles for a particular trait? a) Homozygote b) Heterozygote c) Dominant d) Recessive 3. A cross between a homozygous dominant individual and a homozygous recessive individual will produce offspring with what genotypic ratio? a) 1:1 b) 1:2:1 c) 3:1 d) 9:3:3:1 4. In humans, the inheritance of gender is determined by: a) Autosomal chromosomes b) Mitochondrial DNA c) Sex-linked genes d) Polygenic inheritance 5. What is the term for the observed physical or biochemical characteristics of an organism? a) Genotype b) Allele c) Phenotype d) Homologous trait 6. A trait that is expressed only in the homozygous condition and is masked by a dominant allele in the heterozygous condition is known as: a) Recessive trait b) Alleleb) Polygenic trait c) Sex-linked trait d) Dominant trait 7. What is the term for the diagrammatic representation of a family’s genetic history and the transmission of traits over generations? a) Punnett square b) Karyotype c) Pedigree d) Genetic map 8. When two alleles for a trait are both expressed in the heterozygous condition, it is called: a) Codominance b) Incomplete dominance c) Polygenic inheritance d) Epistasis 9. A genetic disorder caused by the presence of an extra copy of chromosome 21 is known as: a) Hemophilia b) Down syndrome c) Turner syndrome d) Klinefelter syndrome 10. The law of independent assortment states that the segregation of alleles for one trait occurs independently of the segregation of alleles for another trait, provided that: a) The traits are located on the same chromosome b) The traits are linked genes c) The traits are codominant d) The traits are on different chromosomes Loading … Question 1 of 10 Back to AP Practice Test
