DATE 5/02/23 Law of Segregation of Alleles: As chromosomes separate into different gametes during melosis, the two different alleles for a particular gene also segregate so that each gamete acquires one of the two alleles. The principle of independent assortment states that each allele pair separates independently of the other allele pairs during the formation of gametes, because the traits are located on different chromosomes, meaning that traits are transmitted to offspring independently of one another. 75 NAME 2. What percentage of the P generation shows the recessive fur color? Segregation Gametes Directions: Use the three concepts defined above to explain the two crosses below: Parents 5. What percentage of the P generation shows the dominant ear shape? 8. What percentage of the F1 generation shows the dominant fur color? de fur might ears, brown for All offspring look the same Cross 1 1. How do the F1 results in Cross 1 show the effect of genetic recombination? Genetic recombination is the production of offspring with combinations of traits that differ from those found in either parent Principle of Dominance one allele (dominant) masks the effect of the other allele (recessive) 3. What percentage of the P generation shows the recessive ear shape? 6. What percentage of the F1 generation shows the recessive fur color? 9. What percentage of the F1 generation shows the dominant ear shape? 4. What percentage of the P generation shows the dominant fur color? the F1 generation shows 7. What percentage of the recessive ear shape? 10. What phenotype shows both dominant traits (ear & fur)? 11. After using math to analyze this cross, explain what happened to the recessive alleles in the F1 generation. 12. Does the inheritance of the ear trait affect the inheritance of the fur trait? How do you know? F1 straight ears, while for T1 parents straight ears, brown fr BLOCK_IA 12 X s. from br Sappy ears, while for 3 Fether Seppy ears brown fur Cross 2 13. Look at individual #3 in the F1 generation. Use the Principle of Independent Assortment to explain how it got its phenotype. 14. Look at individual #2 in the F1 generation. Use the Principle of dominance to explain how it got its phenotype. 15. Use the Law of Segregation of Alleles to explain the traits of F1 individuals 2 & 3 in relation to the fathers & phenotype. 16. How would you describe the phenotype of the P generation in Cross 1 to Cross 2? 17. How does the amount of genetic variation in the F1 of Cross 1 compare to the amount of genetic variation in the F1 of Cross 2? 18. Explain how the two examples start off with parents that look the same but result in different offspring.