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Transcript
Heredity (Chapter 11) Review ANSWERS 1. TO PREDICT THE PROBABILITY OF TRAITS THAT CAN BE PASSED TO OFFSPRING. 2. GENOTYPES: HH PHENOTYPES: Brown PERCENTAGES: 25% Hh hh Brown Blonde 50% 25% H h H HH Hh h Hh hh 3. HYBRID: A MIX OF DOMINANT AND RECESSIVE ALLELES 4. PUREBRED: ONLY DOMINANT OR RECESSIVE ALLELES 5. HOMOZYGOUS: PUREBRED; HH OR hh 6. HETEROZYGOUS: HYBRID: Hh 7. DOMINANT TRAITS ALWAYS SHOW UP IN THE PHENOTYPE; CAPITAL LETTER 8. RECESSIVE TRAITS CAN ONLY SHOW UP IF PAIRED WITH ANOTHER RECESSIVE ALLELE (DOMINANT OVERSHADOWS THE RECESSIVE); LOWER CASE LETTER. 9. HEREDITY IS THE STUDY OF HOW TRAITS ARE PASSED FROM ONE GENERATION TO ANOTHER, GENETICS IS THE STUDY OF HOW THE GENE PAIRS DETERMINE WHAT TRAITS ARE SHOWN. 10. TO TRACE SPECIFIC TRAITS OVER MANY GENERATIONS 11. THE SHADED IN SHAPE HAS THE SPECIFIC TRAIT 12. MALES ARE SQUARES AND FEMALES ARE CIRCLES 13. THEIR SHAPE IS SHADED IN 14. THEIR SHAPE IS NOT SHADED IN 15. THEY BOTH REPRESENT A TRAIT WITH TWO IDENTICAL ALLELES (HH OR hh) 16. THEY BOTH REPRESENT A TRAIT WITH TWO DIFFERENT ALLELES (Hh) 17. ON THE CHROMOSOMES 18. THE TRAIT THAT YOU PHYSICALLY SEE (BROWN HAIR) 19. THE DESCRIPTION OF THE GENE PAIR USING LETTERS (Hh) 20. IT IS WHERE THE DOMINANT TRAIT DOES NOT COMPLETELY OVERSHADOW THE RECESSIVE TRAIT AND THERE IS A BLENDING OF THE TRAIT. EX: A WHITE FLOWER AND A DARK BLUE FLOWER CROSS TO GIVE A LIGHT BLUE OFFSPRING. 21. TRAITS THAT ARE GENETICALLY PASSED DOWN FROM PARENT TO OFFSPRING 22. NOT PASSED DOWN, YOU MUST LEARN HOW TO DO THEM 23. WHERE GENES GET MESSED UP DURING THE REPRODUCTION PROCESS 24. BY THE 23RD CHROMOSOME. FEMALES ARE XX AND MALES ARE XY. MALES DETERMINE THE SEX OF THE OFFSPRING. 25. MANIPULATING GENES TO ALTER TRAITS 26. AN EXTRA CHROMOSOME 27. EACH PARENT CONTRIBUTES ONE OF THE ALLELES FOR A TRAIT. MOTHER CONTRIBUTES ONE AND FATHER CONTRIBUTES ONE