Announcements. Exam 1 is on Monday Multiple choice: 15-20 questions Matching: 8-10 questions Problems: 4-6 multipart problems (probably ~50% of total points) Multiple choice/matching problems from lecture, key terms/concepts, and homeworks (covers reading up through Chapter 5)
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Exam 1 is on Monday
Multiple choice: 15-20 questions
Matching: 8-10 questions
Problems: 4-6 multipart problems (probably ~50% of total points)
Multiple choice/matching problems from lecture, key terms/concepts, and homeworks (covers reading up through Chapter 5)
Problems similar (NOT IDENTICAL) to Homeworks 1-3
Homework keys and term lists are all on the course website
Bring a #2 pencil!
You may use a regular calculator, but no phones allowed
BIO 304 Lecture 9
At which stage of meiosis does crossing over occur?
If a dihybrid test cross produces 30% recombinant progeny, EACH parental class must represent ________% of the progeny.
3 Drosophila alleles (autosomal):
eye color: v (vermillion) or v+ (wild type, red)
wing veins: cv (no cross vein) or cv+ (wild type)
wing edges: ct (cut) or ct+ (wild type)
What is the order of the three genes and the distances between them?
Pv+ /v+cv /cv ct/ct X v/vcv+/cv+ ct+ /ct+
F1 trihybridv+ /vcv+ /cv ct+ /ct
TEST CROSS:v+ /vcv+ /cv ct+ /ctX v/vcv/cv ct/ct
F1 trihybrid femaletester male
Recombination frequency v and cv: 18.5
Recombination frequency v and ct: 13.2
Recombination frequency cv and ct: 6.4
Double recombinants have the middle gene“flipped” relative to parental arrangement:
How confident do you feel about your mastery of the material for the exam?
2.I understand almost everything, but need to go over a few topics
3.I'm sure I'll understand everything once I cram this weekend
4.Not very confident