need help with a, b & c, 2 (a, b, c &d) ontal line, the family line, from which
ID: 262557 • Letter: N
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need help with a, b & c, 2 (a, b, c &d)
ontal line, the family line, from which the children are represented in order of birth. Roman rals, if present, designate generations. 1Father Mother Il Daughter Son TABLE 25.2Frequencies of Phenotypes for Cerumen Type among Students at Ball State University Phenotype Total Wet, sticky cerumen Dry, crumbly cerumen Totals Percentage 96.3 3.7 100.0 79 82 TABLE2S.3 Familial Data Obtained from Pedigree Studies of Families among Whom Variation Occurred with Respect to Type of Cerumen Children Number of Families Dry-Crumbly Totals Wet-Sticky 78 32 Parents 83 28 16 Wet X wet Wet dry Dry X dry Totals 18 128 45 15 17 18 19 20 16 9 10 11 12 13 14 21 22 FIGURE 25.1 Pedigree illustrating the typical pattern of inheritance of wet, st versus dry, crumbly cerumen. Shaded circles represent females having dry, crumbly earwax, and shaded squares represent males having the same phenotype. Open ci (females) and squares (males) represent individuals having wet, sticky cerumen. Q marks indicate unknown phenotype uestionExplanation / Answer
a. Mechanism of inheritance of cerum type or blood group from our biological parents same as the inherotance of eye colour or other traits.within the ABO group system, the A &B genes are codominant,i.e. these will be expressed whenever the gene is present.The O gene is silent & only expressed when neither A or B.The Rh(D)is also dominant & will be inherited from either parent.if Rh (D) is not inherited from either biological parent then individual will be Rh negative.and ABO blood grouping is control by gene I.that have three alleles Ia,Ib&i. Ia&Ib produce sugars but i doesnot produce sugar.humans are diploid so each person possesses any two of three I gene.when six different combination of these alleles occur i.e. cross between Ia&Ia produce A type of blood grouping.,Ia&Ib produce AB blood grouping,Ia&i produce A blood grouping,Ib&Ia produce AB blood grouping,Ib&Ib produce B blood grouping,Ib&i produce B blood grouping and i&i produce O blood grouping In diploid p& q represent the frequency of allele A& allele a respectively.b. p is 79 & q is equal to 3.c.p2+2pq+q2 is equal to6297.
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