Matching on the Lines Provided, Write the Letter of the Definition of Each Term

Name______Class______Date______

Matching On the lines provided, write the letter of the definition of each term. I______1. genetics a. likelihood that something will happen C______2. trait b. individual whose two alleles are the same D______3. hybrid c. specific characteristic G______4. gene d. offspring of crosses between parents with different traits J______5. allele e. the idea that only one of two alleles are passed on F______6. gamete f. sex cell A______7. probability g. factor that determines traits H______8. Punnett square h. diagram showing possible gene combinations E______9. Law of Segregation i. the scientific study of heredity B______10. homozygous j. form of a gene

Completion On the lines provided, complete the following sentences. Use the word bank below to assist in problems 11-15. homozygous heterozygous true-breeding hybrid dominant

Law of Independent Assortment genotype phenotype gametes alleles recessive

11. Organisms that self-pollinate, producing offspring identical to themselves, are TRUE-BREEDING______12. Although organisms with the same physical characteristics have the same PHENOTYPE______, they might have different GENOTYPE______, or genetic makeup. 13. According to the principle known as LAW OF INDEPENDENDT ASSORTMENT , genes that segregate independently do not influence each other’s inheritance. 14. DOMINANT______alleles “cover up” the expression of ___RECESSIVE______alleles

15. A ___HYBRID______results in the joining of female and male reproductive cells that contain different forms of a gene.

Multiple Choice On the lines provided, write the letter of the answer that best completes the sentence or answers the question.

B______16. In what process do male and female reproductive cells join during sexual reproduction? a. segregation c. self-pollination b. fertilization d. cross-pollination

Name______Class______Date______

D______17. Organisms that have identical alleles for a particular trait are a. heterozygous. c. diploid. b. polygenic. d. homozygous. C______18. An organism such as a pea plant that has an allele for being tall and an allele for being short is a. true-breeding. c. heterozygous. b. homologous. d. homozygous. B______19. Two organisms with the genetic make up of HH and Hh have the same a. eggs. c. sperm b. phenotype d. genotype D______20. An individual with the genotype of AaBbCcDd would be able to produce _____ types of gametes. a. one c. four b. eight d. sixteen