Question

		Number of cats	Total
Sex	Male	18	50
	Female	32
	Unknown	0
A locus	A/-	25	56
	a/a	28
C locus	C/-	40	54
	cs/-	5
	cb/-	9
D locus	D/-	26	46
	d/d	20
B locus	B/-	18	48
	b/b	30
O locus	XO/Y	8	46
	Xo/Y	12
	XO/XO	10
	XO/Xo	6
	Xo/Xo	10
W locus	W/-	18	45
	w/w	27
S locus	S/S	3	45
	S/s	25
	s/s	17
T locus	T/-	22	44
	t/t	22

B. Gene2: B locus

a. Using the above data, calculate the following (SHOW YOUR WORK):

• p = expected allele frequency for dominant allele = ____________________________________

• q = expected allele frequency for recessive allele = ____________________________________

• p² = expected genotypic frequency for homozygous dominant = ____________________________________

• q² = expected genotypic frequency for homozygous recessive = ____________________________________

• 2pq = expected genotypic frequency for heterozygote = ____________________________________

b. You can use the above values of p2, q2, and 2pq to calculate the number of individuals of each genotype you would expect to see in your sample, given the allele frequencies in your sample. So, how many individuals would you expect to observe who are (for example) TT, Tt, and tt? (SHOW YOUR WORK)

Expected number of homozygous dominant individuals in your sample = ____________________________________

Expected number of heterozygote individuals in your sample = ____________________________________

Expected number of homozygous recessive individuals in your sample = ____________________________________

Answer 1

Please look in the image for solution:

в) gere 2-B Locus b30 8/-18 Total 48 *Expected al etic freauenty q isblb Total 30 48 O.625 * Expectecl allic freency pis 1-9 |0-79 0. 79 = 0.2) х р2 0-7) 6004 *92-(0-21)0.044 2Pa 2X D.74 X 0.21 =0.3318 bIndividual Number tor BB P)X 48 = 0.6004x48 = 28.8129 bb = 0 3 O 044x 48 - 2-1 b) r/-22 , Expectec auletic Total 44 tt-22 0.707 frequncy of tlt T is 1- t--0.707=0 30 Expected clomina nt indlividluat (0.3)*x44 - 396 4 TT (Homoyus eterozygote (TE) = 2XTxtx 44= 2X 0.70x0.30x 4 18.48 8 recessive (tt)6.70)x48 -21-5622 nozygo Homayeus