#Question id: 4770
#Unit 8. Inheritance Biology
When two independent pure lines of pea with white flowers are crossed, the F1 progeny has purple flowers. The F2 progeny obtained on selfing shows both pruple and white flower in a ratio of 15:1. The following conclusions were made
A. Two different genes are involved, mutation in which lead to formation of white flower.
B. These two genes does not show independent assortment
C. This is an example of complementary gene action
D. The is an example of duplicate genes
Which of the following conclusions are correct?
#Question id: 4771
#Unit 8. Inheritance Biology
The normal eye color of Drosophila is red, but strains in which all flies have brown eyes are available. Similarly, wings are normally long, but there are strains with short wings. A female from a pure line with brown eyes and short wings is crossed with a male from a normal pure line. The F1 consists of normal females and short-winged males. An F2 is then produced by intercrossing the F1. Both sexes of F2 flies show phenotypes as follows:
Are genes for eye color and wing length x link or autosome?
#Question id: 4772
#Unit 8. Inheritance Biology
A black Labrador, Three phenotype of black, brown and yellow is control by non allelic gene interaction. Following some genotype
The following conclusions were made
A. The 9:3:4 ratio obtained upon selfing of AaBb here indicates recessive epistasis
B. This is a recessive epistasis where homozygous bb is epistatic to A and a.
C. When Gene A and B incompletely link, It will be produced all phenotype black, brown and yellow upon selfing of AaBb
D. When Gene A and B incompletely link, test cross of AaBb will be produced all phenotype black, brown and yellow in ratio 1:1:2 respectively
Which of the following conclusions are correct?
#Question id: 4773
#Unit 8. Inheritance Biology
In Drosophila body color gene present on X chromosome but wing shape present on autosome. Gray body color is dominant over yellow body color. Long wing is dominant over short wing. Female is heterozygous for Gray body with long wing was cross with male that yellow body with short wing. Which of the following is correct approximate number of some phenotype of 400 offspring?
#Question id: 4775
#Unit 8. Inheritance Biology
Female parent | Male Parent | Offspring |
Recessive phenotype | Dominat phenotype | F1 A- all recessive phenotype |
Dominat phenotype | Recessive phenotype | F-1 B all dominant phenotype |
F1A | F1 B | all dominant phenotype |
Which of the following is correct observe for above genetic cross?
#Question id: 4776
#Unit 8. Inheritance Biology
True breeding agouti mice with genotype AABB were cross to true breeding albino mice with genotype aabb. All F1 offspring having agouti phenotype were allowed to intercross to produce F2 progeny as following
A- B - agouti,
aa B- black
-- bb albino
Following genetic cross and there proportional?
|
Genetic cross |
Proportional of albino |
|
AaBbXAaBb |
A |
|
AaBb X aabb |
B |
|
Aabb X aaBb |
C |
|
AABbX aaBb |
D |