Genetics and Hereditary

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Across
  1. 2. An individual who is heterozygous for a recessive disorder is called a _____.
  2. 4. A cell with "n" number of chromosomes is called a ___ cell.
  3. 8. The process by which one haploid gamete combines with another haploid gamete is called ____.
  4. 9. Gametes are formed during a process called ____, which is a type of cell division that reduces the number of chromosomes.
  5. 12. From these results, he developed the ____________.
  6. 13. ____ is a process during which chromosomal segments are exchanged between a pair of homologous chromosomes.
  7. 17. A cell that contains 2n number of chromosomes is called a ____ cell.
  8. 19. The new combination of genes produced by corssing over and independent assortment is called ________.
  9. 20. The chromosomes that make up a pair, the one chromosome from each parent are called ____.
Down
  1. 1. Mendel's _______ states that the two alleles for each trait separate during meiosis.
  2. 3. This is an example of _______ in which the heterozygous phenotype is an intermediate phenotype between the two homozygous phenotypes.
  3. 4. These heterozygous organisms are called _____.
  4. 5. In the case of humans, a scientist studies a family history using a ____.
  5. 6. An organsim with two different alleles for a particular trait is ____.
  6. 7. The observable characteristic or outward expression of an allele pair is called the ______.
  7. 10. The study of ____, which is the science of hereditary, began with Mendal who is regarded as the father of genetics.
  8. 11. ______ is the occurance of one or more extra sets of all chromosomes in an organism.
  9. 14. In order to maintinf the same chromosomes number from generation to generation, an organism produces ___.
  10. 15. An organism with two of the same alleles for a particular trait is ____.
  11. 16. The organism's allele pairs are called its ____.
  12. 18. The DNA on chromosomes are arranged in these segments called ___.