BIO SCI
Bio+97+Worksheet+6+Key

# Bio+97+Worksheet+6+Key - Bio 97 Worksheet 6 1 A plant of...

• Notes
• 4

This preview shows pages 1–3. Sign up to view the full content.

Bio 97 Worksheet 6 1) A plant of genotype is test crossed to If the two loci are 10 m.u. apart, what proportion of progeny will be A B / a b ? (Assume that only 45% progeny are ab/ab). (100 – 10)/2 = 45 10 percent recombination so 90% will be parental – 45% ab/ab, 45% AB/ab Loci are close to each other. Therefore, we will see small percentage of recombination (10%). The remainder will have the parental genotype (either ABab or ABab) 2) The frequency of crossing-over between linked genes A and B is 35%; between B and C is 10%; between C and D is 15%; between C and A is 25%; between D and B is 25%. The sequence of the genes on the chromosome is: a) ACDB b) ACBD c) ABDC d) ABCD e) ADCB

This preview has intentionally blurred sections. Sign up to view the full version.

3) In squash plants, the three genes thin leaf (T), large fruit (L), and green flowers (G) are linked. You decide to determine the gene map for these three genes as part of your final project. When your cross two true breeding plants together the following set of offspring are produced:
This is the end of the preview. Sign up to access the rest of the document.
• Winter '10
• EvaHarris
• Genetics, #, 10 m, 10.6%, 11.9 %, 13.2 %

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern