Question

Genetics Exam 2 Fall 2019 Name Choose the best answer Which of the following AARACC A ype types de . prevent allerding AARDCC d. all representar-breeding p 2. Being able to use a Punnettuare to pullern in a two character cross creamp s weed color and seed shape shape) demonstrates Mendel's idea of allele b. Mending herance environmental influence on a gened independent o n 3. Which of the following was not one of Mendel's conclusions based on the machin e s Genes are carried on chromosomes. b. Alleles e n pairs Alleles segregate equally into yameles d. Alles behave as particles during inheritance. 4. Which of the following symbol represents wild type wille? what is the 3. Two pene loci. A d sor independently and willes A and B are dominant over alles and probability of producing an AB game from an Ast individual % % 1/16 09/16 6-15 True and False 6 Mendel's laws of great and independent sortment both have their biological basis in events that take place during misis 7. A diploid organism that is heterozygous of a given gene has the same number of alleles as does The gamele produced by the offspring will carry only one whicle forage 9. Lacus are two penes found on the same chromosome 10. For a recessive trait to be expressed there must be a hom e 11. The backcross is a type of festcross 12. Under normal circumstances organes express the receive that the breeding 13. Mendel probably had no knowledge of mitosis or meios. 14. Because of modern recombinant DNA techniques, Mendelian principles of inheritance have been replaced with update version of inheritance 15. The larger the calculated chi squared the better the data fit the hypothesis. 16. Probabilities are calculated using the addition rule when they Are equally likely b. Are independent c. Are mutually exclusive d. Occur disproportionately 17. A couple would like to know what the probability is that out of children, there will be girls This is solved using which of the following! sum rule b. product rule c. chi-square test d. binomial expansion haploid gametes 18. In a Punnett square diagram, the outside of the box represents the a diploid offspring b. haploid offspring c. diploid gametesd

Answer 1

1.d) All the genotypes represent a true breeding genotype.

2.d) It represents Mendel's idea of independent assortment which states that two characters can be independently inherited if the genes are not linked and assort independent of each other on the chromosome.

3.a) Genes are carried on chromosomes. This was proposed by Walter Sutton and T. Boveri in Chromosomal Theory of Inheritance.

4.d) the + sign represents wild type allele.

5.a) 1/4 probability.

Aa x Bb

A a x B b

AB Ab aB ab. Therefore 1/4 probability.

16.c) mutually exclusive

17.b) product rule

18.d) haploid gametes.

True- false

6. False. The events take place during meiosis.

7. True. Every gene will have two alleles or more regardless of hetero or homo.

8. True ( Law of Segregation).

9. False. Locus is the location where a gene is located.

10. True

11. False. A backcross is a cross where the F1 is crossed with one of the parents to recover an elite genotype whereas in a testcross a homozygous recessive individual is crossed with a dominant phenotype.

12. False. Dominant traits can be true breeding too.

13. False. He suggested the law of independant assortment which occurs during meiosis.

14. False. Mendelian inheritance still holds true.

15. False. This applies to a small chi square which means observed and expected values fit well.