Exam 2 -- Unknown Year -- ANSWERS

Exam 2 -- Unknown Year -- ANSWERS - (3) For coatcolor in...

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

View Full Document Right Arrow Icon
(3) For coat color in rabbits, several alleles of C fulIblack coat color ":, himalayan pattem (white with coloration at limb tips) c* cirincirilia (white irairs with black tips) c albino C is dominant to all other alleles, ch and, c'h ateco-dominant and both are dominant to c. A rabbit population is in Hardy-weinberg equilibrium, where the allele frequencies are: c 0.2 ch 0.3 c'h 0.4 (d) 0.68 (e) c 0.1 What is the expected frequency of rabbits with full black coat color in this population? (a) (0 0.4 0.22 i (c) (h) ,, (i) 0.16 0) (a) Which of the following would allow you io distinguistr between an autosomffi cytoplasmically inherited fait in humans? ''l!.- (a) An unaffected mother and affected father have an unaffected son. .'T * qX{fected mother ana #eited father have an unaffected daughter. ''(c) An a:f$cted mother and affdited father have an affected son. @l e" affected mother and affeclgd father have an #Mu daughter. (e) An affepted mother and unaffected father have an affected son. ,. (D An affiteu mother and unaffected father have an affected daughter. (g) (a) and (b) are conect (h) (c) and (d) are correct (i) (e) and (D are correct O none of the options are correct (5) The mclmutrtion in Drosophila is a recessi" to sterility in females only. A mell+ female is crossed with a mell+male fly. The Fl progeny flies are raised together and allowed to mate randomly with each other. What proportion of the r"rluhiog tot"l F2 flies will be sterile? (a) r/32 @) 3/32 (c) 3/16 (d) l1t_6," 1ey ilr (f) r/4 (g) str6 (h) r/2 .'(D Us. , 6; str i,. -
Background image of page 1

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

View Full DocumentRight Arrow Icon
(6) A deleterious autosomal recessive tait occurs in newborn babies in the U.S. at a frequency of I in 1,000,000 (1 in 106). AssumethatthepopulationisinHardy-Weinbergequilibrium. Achildbomto a couple in generation II in the following pedigree. What is the probabititytfrat the child IV.l will be affected? !' - , ',, ;' 1"" : "l -- . " : .t:t ,. / ii1 , r'_. 1 - I "i. I ,,,i. ....- \ ,;t . (a)3.7 x l0'a (b) 8.3 x 10-2 (c)2.5x l0-3 "' i,(e) cannot be determined with information available (f) 6.7 x 10'3 @) 2.4x 10-6 (h) 1.4 x 10-2 (7) Which of the following statements is accuiate? .-:-,- (a) none of the options is correct. (b)*1ttt mutations affecting chloroplast or mitochondria function are cytoplasmically inherited. -(*LHtt roplasmic cells have one mutant and one wild-type copy of an organelle-encoded allele. ' (a) All chloroplast genes show strict uniparental inheritance. "'(e) When stict maternal mitochondrial inheritance is observed, it is always due to the fact that the malbgametes contain no mitochondria. "'' (p. .f9r children in the same family, there is generally genetic variation in mitochondrial genes just as therb is for nuclear genes. (g) more than one of the options is correct. (8) The recessive mini- mutation in Drosophila results in miniature flies. The fitness of these flies relative to wild-type is 0.4. The mini+ gene is located on the X chromosome. In a population of flies otherwise at Hardy-Weinberg equilibrium, where the allele frequency for the mutant minf' allele is 0.4, what will be the minf allele frequency after one generation of selection?
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/12/2010 for the course BIOL 305 taught by Professor Zhang during the Fall '10 term at University of Michigan.

Page1 / 9

Exam 2 -- Unknown Year -- ANSWERS - (3) For coatcolor in...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online