DIRECTED READING

Question 1

GIGORD ET AL 2001

Answer 1

• orchid purse and yellow
• polymorphism
• N-fd
• rare morph have reproductive advantage

Question 2

GRATTEN ET AL 2008

Answer 2

• black sheep and large size = fitter
• Correlated traits
• pleiotropy and LD

Question 3

ALCAIDE et al 2004

Answer 3

• ring species in tibet
• greenish warbles
• genetic gradient, allopatric has occurred
• 2 reproductively isolated forms in siberai (these don’t form hybrids)

Question 4

Goddard et al 2005

Answer 4

SS: red queen: adaption
• effect of sex on the efficacy of NS in yeast
• used yeast as when with sufficient nutrients yeast reproduces ASEXUALLY, but if starved they undergo meiosis = spores equivalent to gametes
• created ASEXUAL yeast strain by deleting 2 genes needed for meiosis
• in HARSH conditions SEXUAL had higher growth rate 94% compared to 80%

Question 5

Price et al 2010

Answer 5

POLYANDRY PREVENTING EXTINCTION
• polyandry females may protect from SR by increasing sperm competition intensity & therefore undermining the transmission freq of the driving chromosomes
• polyandrous populations had higher proportion of males
• 5/12 monogamous lines went extinct
• lower SR freq in polyandrous