Amoeba sisters video recap sex linked traits

Draw the Punnett Square below that shows the cross between the mother and father you selected. 19. What is the percent chance in the Punnett square that you drew of having an O baby? ___________ 20. Can a baby that has blood type AB have one parent that is type O? Why or why not? If it is difficult to explain, try explaining with a Punnett Square diagram. AMOEBA SISTERS: VIDEO RECAP MONOHYBRID CROSSES (MENDELIAN) Amoeba Sisters Video Recap: Monohybrid Crosses (Mendelian Inheritance) Vocabulary practice! Fill in missing boxes assuming that having hair for guinea pigs follows Mendelian inheritance, where the H dominant allele codes for hair and h codes for a lack of hair (hairless). Image Genotype Heterozygous or Phenotype Homozygous? HH 1. 2. 5. 3. 4. Hairless 6. Heterozygous 7. 8. An allele is a form of a gene. In the Punnett square on the right, how many H/h alleles does a baby guinea pig inherit from the mother? _______ How many H/h alleles does a baby guinea pig inherit from the father? _______. If a baby girl guinea pig looks almost identical to its mother, does this then mean that it inherited more alleles from its mother? Explain. (Hint: Think about the vocabulary words dominant and recessive.) AMOEBA SISTERS: VIDEO RECAP MONOHYBRID CROSSES (MENDELIAN) Mysterious Fred: A Guinea Pig Test Cross There is a teacher from Texas that loves hairless guinea pigs. In guinea pigs, the dominant allele H codes for the trait of having hair and the allele h codes for the trait of being hairless. (Assume Mendelian inheritance). Let’s say that this teacher receives her wish of finding a hairless guinea pig at a pet store and names her Genevieve. She finds another guinea pig at a store with hair that she names Fred. While she can be certain of Genevieve’s genotype, how could she determine what genotype Fred is? She can do a test cross! A test cross involves breeding an organism with a dominant trait (like Fred) with an organism that exhibits a recessive trait (like Genevieve). 9. Genevieve has the genotype ___________. 10. Fred’s genotype could be ________ or _________. 11. If Fred was genotype __________ and bred with Genevieve… 13. If Fred was genotype __________ and bred with Genevieve… 12. Please draw Punnett Square below to show prediction for offspring. 14. Please draw Punnett Square below to show prediction for offspring. 15. Explain in your own words how the offspring from the test cross could help determine Fred’s genotype. 16. What could be some weaknesses with using a test cross to determine Fred’s genotype? Amoeba Sisters Video Recap- DNA, Chromosomes, Genes, and Traits: An Intro to Heredity The vocab below builds a foundation for understanding heredity! Complete the table using your own words and creativity. Name Illustrate! Explain it in Your Own What’s its Significance? Real Life Words (Why does it Matter?) Example DNA 1. 2. 3. DNA found in the body cell of a snake Chromosome 4. 5. 6. Gene 7. 8. Chromosomes allow the large amount of DNA to be compacted. One reason this is significant is in cell division as it makes it much easier for the cells to put these units into the new cells. 9. Trait 10. 11. 12. 14. For the diagram at right, please label the following words on the diagram. (A) Deoxyribose (sugar), (B) Phosphate, and (C) Nitrogenous Base. 15. Based on the definition, how many nucleotides do you see in this diagram? ____ 16. What are the four different types of bases in DNA and how do they pair? 17. When studying heredity, what is the relationship of DNA bases and traits? One of many genes that can code for a protein involved in eye pigment 13. Amoeba Sisters Video Recap- DNA, Chromosomes, Genes, and Traits: An Intro to Heredity A Picture Says It! 18. Explain what this image represents regarding where your entire DNA code can be found. __________________________________________________________ __________________________________________________________ __________________________________________________________ 19. Apply Your Understanding Spike is not a clone of his father. He inherited DNA from both of his parents. Chromosomes are condensed units of DNA. If Spike has 36 chromosomes, you would expect that Spike would have inherited ______ chromosomes from his mother and ______ chromosomes from his father. 20. How did you determine the chromosome numbers and how does that relate to heredity? ____________________________________________________________________________ _______________________________________________________________________________________________ 21. As mentioned in the video, the environment can also affect an organism’s traits. The example of nourishment was used in the case for Spike, as this could affect his growth and size. This can also occur in humans. UV light was not mentioned in the video. How could UV light potentially affect an organism’s trait? Provide one example.