#Question id: 4867
#Unit 8. Inheritance Biology
A three point test cross was carried out in Drosophila melanogaster involving three adjacent incomplete link genes A, B and C. arranged in the same order. The distance between A to B is 5 map units (mu) and that between B to C is 10 map. If pure line Drosophila AAbbCC crosses with aaBBcc to produce F1 offspring were allowed to cross with aabbcc result in following offspring genotype?
|
Genotype |
Percent |
|
Aabbcc |
A |
|
aabbCc |
B |
|
AaBbCc |
C |
What is a A, B, C respectively?
#Question id: 4868
#Unit 8. Inheritance Biology
A mouse cross C/c . D/d X c/c . d/d is made, and in the progeny there are
45% C/c . d/d, 45% c/c . D/d,
5% c/c . d/d, 5% C/c . D/d
What are distance between C and D gene?
#Question id: 4869
#Unit 8. Inheritance Biology
In the plant Arabidopsis, the loci for pod length (L, long; l, short) and fruit hairs (H, hairy; h, smooth) are linked 16 map units apart on the same chromosome. The following crosses were made:
(i) L H/L H X l h/l h = F1
(ii) L h/L h X l H/l H = F1
If the F1’s from (i) and (ii) are crossed, what proportion of the progeny are expected to l h/l h?
#Question id: 4870
#Unit 8. Inheritance Biology
Following gene order is for three points. If Genotype +y +ct +v produced actual number of double cross over gamete is 10 out of total 1000. What is interference value?
#Question id: 4871
#Unit 8. Inheritance Biology
In a testcross of an individual heterozygous for each of three linked genes, the most frequent classes of progeny were A B c/a b c and a b C/a b c, and the least frequent classes were A B C/a b c and a b c/a b c. what is the order of the genes?
#Question id: 4872
#Unit 8. Inheritance Biology
F1 heterozygous females are test-crossed with males and produced 1800 progeny The interference between these genes is 0.4. What number is of observe double cross over?