11. Please give answers with detailed explanations. preferentially done by hand

Question

11. Please give answers with detailed explanations. preferentially done by hand or on computer. Need ASAP and will rate ASAP. This DNA with Use the figure to the right for questions 22 and 23 graph depicts the changes to the amount of present in a recipient cell during conjugation an Hfr cell. DNA from the Hfr cell begins entering the recipient cell at Time A Amount of DNA present in recipient cell the 22. What is happening at Time C that accounts for decrease in DNA content? A. crossing over B. cytokinesis C. secretion of excess DNA to the surroundings D. degradation of DNA that was not retained in the recipient's chromosome E. reversal of the direction of conjugation Time 23. In what way is the recipient cell different at Time D than it was at Time A? A. It is diploid. B. It has a greater mass of DNA. C. It has a different sequence of base pairs D. It contains plasmid DNA in its chromosome E. The cell has decreased in size 24. (4 pts) In Trump flies, two mutants are known: good hair (wild type bad hair) and small mouth (wild type big mouth). The two genes are autosomally linked and 20 map units apart Furthermore the gene for hair type is paternally imprinted. Two flies with the genotypes given below were mated mesmX female GH sm GHmet sm GH'met sm male GH smt female male- What proportion of the offspring from this cross will have bad hair and a big mouth? Note: genetic symbols follow the standards for Drosophila notation. A. none B. .05 C. 25 D. 30 E. .50 Work Space

Explanation / Answer

the allele present are ;

C - curved hair ,dominant

C+ -recessive ,straight hair

H -spiraled hair - dominant

h -recessive of spiraled

a/a+ -lack of hair { seen at third locus }

1. phenotype of the female mosquito ;

the phenotype of the female will be curved hair which is a dominant allele ,located at the first locus of the gene .

2. Genotype of the male parent ;

c+/c+ ; h/h ; a/a+ ,

c+ represent the straight hair which is a recessive allele ,a no hair , h ,recessive spiraled hair

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