#Question id: 4861
#Unit 8. Inheritance Biology
Two character X and Y, both follow law of dominance due to 3:1 F2 phenotypic ratio monohybrid cross separately. If carry out dihybrid selfing cross for heterozygous genotype for both character does not follow law of independence assortment in normal environmental condition due to these two loci for character are linked at 20 map unit as cis configuration. Which of the following proportional genotype that homozygous for all loci in F2 generation?
#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?