#Question id: 4862
#Unit 8. Inheritance Biology
In guinea pigs, white coat (w) is recessive to black coat (W) and wavy hair (v) is recessive to straight hair (V). A breeder crosses a guinea pig that is homozygous for white coat and wavy hair with a guinea pig that is black with straight hair. The F1 are then crossed with guinea pigs having white coats and wavy hair in a series of testcrosses. The following progeny are produced from these testcrosses:
black, straight - 220 black, wavy -30
white, straight -30 white, wavy- 220
If the genes are not assorting independently, what is the distance between coat color and hair shape governing gene
#Question id: 4863
#Unit 8. Inheritance Biology
Two genes of a flower, one controlling blue (B) versus white (b) petals and the other controlling round (R) versus oval (r) stamens, are linked and are 10 map units apart. You cross a homozygous blue-oval plant with a homozygous white-round plant. The resulting F1 progeny are crossed with homozygous white-oval plants, and 1,000 F2 progeny are obtained. How many plants of each of the four phenotypes do you expect?
#Question id: 4864
#Unit 8. Inheritance Biology
Following is a number of different gamete produced by AaBbCc
ABC- 366, abc- 367, aBc- 109 AbC-105
aBC-3 Abc -4 ABc- 25 abC-21
What are distance between A and B
#Question id: 4865
#Unit 8. Inheritance Biology
Neurospora strain with genotype Ab was cross to another strain with genotype aB. Following different ascus and their appropriate number given in table.
|
Ascus type |
1+2 |
3+4 |
5+6 |
7+8 |
Number |
|
1 |
Ab |
Ab |
aB |
aB |
150 |
|
2 |
AB |
AB |
ab |
ab |
10 |
|
3 |
Ab |
AB |
ab |
aB |
31 |
|
4 |
Ab |
AB |
aB |
ab |
21 |
|
5 |
aB |
aB |
Ab |
Ab |
88 |
Which is distance between gene A and Gene B?
#Question id: 4866
#Unit 8. Inheritance Biology
In a certain diploid plant, the three loci A, B, and C are linked as follows: Assuming 100% interference, if the plant with genotype ABC/abc is test cross, what proportion of the progeny will be of the genotype a b c/a b c?
#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?