1 / 40

Genetics Review

Genetics Review. Ms. Edmondson. Question #1. What does the term phenotype mean? Answer: How a trait appears/looks. Question #2. What does the term genotype mean? Answer: The group of genes that make up a trait (the letters). Question #3. What does a capital letter mean? Answer:

ksprague
Télécharger la présentation

Genetics Review

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Genetics Review Ms. Edmondson

  2. Question #1 What does the term phenotype mean? Answer: How a trait appears/looks

  3. Question #2 What does the term genotype mean? Answer: The group of genes that make up a trait (the letters)

  4. Question #3 What does a capital letter mean? Answer: It means the allele is dominant

  5. Question #4 If an allele is recessive how many copies of the allele are needed for it to be expressed? Answer: Two copies (aa-one from mom and one from dad)

  6. Question #5 What type of alleles are known as ‘loud and bossy’? Answer: Dominant alleles

  7. Complete Dominance

  8. Question #6 Purple flowers (P) are dominant to white flowers. Write the genotype of a heterozygous purple flower. Answer: Pp

  9. p P p pp Pp p Pp pp Question #7 Purple flowers (P) are dominant to white flowers. If a white flower is crossed with a heterozygous purple flower, what is the chance of having white flowers? Answer: 50%

  10. p P P Pp PP p Pp pp Question #8 Purple flowers (P) are dominant to white flowers. If two heterozygous flowers are crossed, what is the chance of having white flowers? Answer: 75%

  11. Question #9 Is AA, heterozygous, homozygous dominant or homozygous recessive? Answer: heterozygous dominant

  12. Question #10 If red colored dragons are dominant to orange colored dragons what is the phenotype for a dragon who is Rr? Answer: Red

  13. Question #11 If red colored dragons are dominant to orange colored dragons what is the genotype for a dragon who is orange (use R)? Answer: rr

  14. Question #12 What is another name for homozygous? Answer: Purebred

  15. Question #13 What is another name for hybrid? Answer: Heterozygous

  16. G G G GG GG g Gg Gg Question #14 In OompaLoompahs, gray faces (G) are dominant to orange. If a homozygous gray faced male married a heterozygous gray female and they have 6 kids, about how many will have gray faces? Answer: ½ * 6 = 3

  17. g G G Gg GG g Gg gg Question #15 Two heterozygous Oompahs are crossed. What proportion of the offspring will have orange faces? Answer: 75%

  18. Incomplete Dominance

  19. Question #16 In a certain type of fish there are three possible alleles; red, orange, and yellow. Orange is the intermediate of red and orange. Assuming red is R and yellow is Y, what is the genotype for the orange fish? Answer: RY

  20. Y R Y YY RY Y RY YY Question #17 In these same fish where RR- Red, RY- Orange, and YY- Yellow, what are all of the possible phenotypes of an orange fish is mated with a yellow fish? Answer: orange and yellow

  21. Y R R RY RR Y RY YY Question #18 In these same fish where RR- Red, RY- Orange, and YY- Yellow, what are all of the possible genotypes if two orange fish are mated? Answer: RR, RY, YY

  22. R R Y RY RY Y RY RY Question #19 In these same fish where RR- Red, RY- Orange, and YY- Yellow, what are the chances of having yellow fish if a red fish is mated with a yellow fish? Answer: 0%, all would be orange

  23. W R R RW RR R RR RW Question #20 R is red and W is white in 4 o’clocks. If a pink flower is crossed with a red flower what are the chances of getting red flowers? Answer: 50% chance

  24. Codominance

  25. Y P P PY PP Y PY YY Question #21 In heffalumps, pink (P) and yellow (Y) are equally dominant, the heterozygote is spotted. If two spotted heffalumps are mated, what are the changes of getting the yellow gene? Answer: 25% chance

  26. Y P P PY PP P PP PY Question #22 In heffalumps, pink (P) and yellow (Y) are equally dominant, the heterozygote is spotted. If a pink heffalump is mated with a spotted heffalump, what are the changes of getting the yellow gene? Answer: 0% chance

  27. Question #23 In some cattle the color roan is a mixture of red (R) and white (W)? What are the genotypes for the following colors: Red- ____ White- ____ Roan- __ Answer: RR, WW, RW

  28. R R W RW RW W RW RW Question #24 In some cattle the color roan is a mixture of red (R) and white (W)? If a red cow and a white bull are mated, what are the chances of having roan babies? Answer: 100%

  29. Multiple Alleles

  30. Question #25 In humans, blood type is a classic example of a trait inherited by multiple alleles. What does multiple alleles mean? Answer: There are more than two alleles for a trait (within a population).

  31. Question #26 In humans, blood type is a classic example of a trait inherited by multiple alleles. How many different alleles are there? Answer: 3

  32. Question #27 In humans, blood type is a classic example of a trait inherited by multiple alleles. What are the three alleles possible? Answer: A, B, and O

  33. Question #28 In humans, blood type is a classic example of a trait inherited by multiple alleles. How many alleles does each person receive? Answer: 2, one from mom and one from dad

  34. Question #29 Complete the following: Blood Types ____ and ____ are dominant over Type O Answer: A and B

  35. Question #30 Complete the following: Blood Types ____ and ____ are codominantly expressed, meaning they are expressed together Answer: A and B

  36. Question #31 What blood type is known as the universal donor and why? Answer: Type O blood, because it has no antigens on its surface and therefore can be given to any person

  37. Question #32 What blood type is known as the universal receiver and why? Answer: Type AB blood, because it will not react poorly to antigen A or B and a person with this blood type can receive a tranfusion from anyone

  38. A A B AB AB O AO AO Question #33 If a mother is homozygous for type A blood and a father is heterozygous for type B blood, what are the chances of having a child with type O blood? Answer: 0%

  39. Question #34 If a mother has type B blood and her son has type O blood is the mother homozygous B or heterozygous B? Answer: Heterozygous, because he had to get one O from dad and one O from mom

  40. Question #35 A woman and her husband claim that their child was mixed up on the hospital because of its dark hair. The mother has type B blood and the father has type A blood. The alleged child has type O blood. Should the parents be concerned? Answer: No, the mom and dad could both be heterozygous resulting in a child with type O blood.

More Related