BSC201OL APPENDIX 10B 1 What is Mendel\'s Law of Segregation? 2 What is Mendel\'
ID: 277837 • Letter: B
Question
BSC201OL APPENDIX 10B 1 What is Mendel's Law of Segregation? 2 What is Mendel's Law of Independent Assortment? 3. What is a monohybrid / dihybrid cross? What ratios did he obtain? 4. What is a phenotype, genotype, allele, heterozygous, homozygous, locus, homologous chromosomes? 5What is meant by complete and incomplete dominance? 6 What does dominant or recessive mean for an allele? 7. What is a staminate / pistillate plant? 8. What is the pericarp? 9. Which characteristics were dominant and recessive in the corn experiment, in the 10. 11. 12. 13. 14. 15. 16. 17. I8. 19. 20. 21. 22. 23. 24. Drosophila? What is meant by FI or F2 generations? Why are fruit flies useful? What does Apterous refer to? What does wild type refer to? What are the stages of the drosophila's life cycle? What are instars, pupae? How many alleles, account for blood types? How many blood types are there? What types of antibodies are produced by different blood types? What is the significance of the Rh antigens? What percentage of humans has Rh antigens? What blood type is most common in black and white populations? Which is the least common? Know Punnet squares. Know how to perform ? (Chi-square) analysis of monohybrid and dihybrid data. 2Explanation / Answer
1. Mendelian law of segregation states that the allele pairs segregate at the time of gamete formation and unite in a random manner at fertilization.
2. Mendelian law of independent assortment tells us that allele pairs segregate independently at the time of gamete formation. This shows that the traits gets transmitted to offspring without being dependent on one another.
3. a monohybrid cross is the breeding experiment which is conducted between parents. the parents differ in one specific trait. the parents are have dissimilar alleles(hetrozygos) at only one locus. one of the parent will have a dominant gene for a certain phenotypic character while the other will have a recessive gene for the certain phenotype.
phenotype is 3:1
Dihybrid cross - parents that differ in two traits are bred in a dihybrid cross. here, the parents are heterozygous for two different characters. one parent will have dominant genes for two characters e.g. tall plant bearing yellow flowers and the other parent has recessive genes for the two characters dwarf plant bearing white flowers in the chromosome.
phenotype 9:3:3:1
4. the genotype is a complete heritable genetic identity; the word genotype can refer to a particular gene or goup of genes carried by an individual as well.
phenotype is a definition of actual physical characteristics. This includes visible characteristics eg height and eye color, overall health, disease history, behavior and general disposition as well.
An allele is a different form of a gene. certain genes have different forms, which are placed at the similar position, or genetic locus on a chromosome.
An allele can be recessive or dominant in nature. Individuals can be homozygous or heterozygous.
homozygous individuals for a specific gene carry two copies of the similar allele. heterozygous individuals for any gene carry two different alleles.
A locus is a fixed position on a chromosome.
The cell consists of two sets of each chromosome; one pair of chromosome is derived from the mother and the other from the father. in a homologous pair the maternal and paternal chromosomes have the similar genes at the similar loci.
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