Genetics Review

1. . This used to determine the probability a trait will be shown Punnett Square 2. In a one-celled organism the only form of reproduction is Mitosis

Explain your answer to #3 3. A person with the genotype Bb will have what color eyes (Brown is dominant BROWN Explain your answer to #3 The dominant trait will always show.

4. The occurrence of an inherited trait that makes an organism different from other members of the same species Variation 5. An inherited characteristic of an organism, which can be passed from one generation to another Trait

6. A gene that codes for a certain characteristic only if it is with another recessive gene. 7. Human female chromosomes 8. Human male chromosomes XX XY

Incomplete Dominance or blending 9. The offspring will exhibit a trait, which is in between that of the contrasting traits of the purebred parents. THERE IS NO RECESSIVE TRAIT Incomplete Dominance or blending 10. Traits which are controlled by the genes of the X chromosome. Examples: colorblindness and hemophilia Sex-Linked

11. I was the 19th century Austrian Monk who is known as the father of genetics Mendel 12. Give the genotype for a Pure dominant Tall pea plant TT

Phenotype Genotype Pedigree Chart 13. A diagram which shows the history of a trait from one generation to another. Pedigree Chart 14. A characteristic or trait of an organism that is coded for by specific genes Examples: blue eyes or brown eyes; long ears or short ears Phenotype 15. The genes that code for a certain characteristic or trait (phenotype) Examples: BB, Bb, or bb; AA, Aa, or aa Genotype

heterozygote or hybrid 16. A change in an organisms DNA Mutation 17. I am a person who will advise couples of how probable it is their children will have an inherited disease Genetic counselor 18. A female frog has 13 chromosomes in each of her egg cells. How many chromosomes will she have in all the other cells in her body? 26 19. An organism with a genotype Rr is also known as heterozygote or hybrid

Homozygote or pure recessive 20. A diagram which traces the history of a trait from generation to generation Pedigree chart 21. One gene in a pair of genes that code for the same characteristic. allele 22. An organism with the genotype tt is also known as Homozygote or pure recessive 23. The study of how an organism inherits traits Heredity

t t T t Tt Tt tt tt tt Tt 24 a)What is Norman’s genotype? What is Nancy’s genotype? Tt 25. Draw a punnett square for the cross between Norman and Nancy t t T t Tt Tt tt tt

Tall=50% floppy ears=50% Tt=50% tt=50% 26. What are the possible phenotypes of the cross (please give %) Tall=50% floppy ears=50% 27. What are the possible genotypes (please give %) Tt=50% tt=50%

28. Samantha has a few birds, she explains to Haley that these birds exhibit (show) incomplete dominance in inheritance for color. What color would the offspring be of a yellow bird and a blue bird of the same species? Use a punnett square. Y Y B BY BY BY BY

Green = 100% BY= 100% B. . What are the phenotypes for this cross (%) C. What are the genotypes for this cross (%) BY= 100%

29. Please draw a Punnett square to show the crossing of the offspring shown in #28. B Y B Y BB BY BY YY