Which one of the following is the most suitable, medium for culture of Drosophila melanogaster?
Moist bread
Agar agar
Ripe banana
Ripe banana
C.
Ripe banana
Drosophila melanogaster is commonly called as fruitfly and is often used in genetic and developmental biology researchers. The ripe banana is the most suitable medium for the culture of this fly.
Moist bread is a culture medium for the fungus Rhizopus while agar-agar is used as a tissue culture medium.
Which one of the following is an example of polygenic inheritance?
Flower colour in Mirabilis jalapa
Production of male honey bee
Pod shape in garden pea
Pod shape in garden pea
In pea plants, yellow seeds are dominant to green. If a heterozygous yellow seeded plant is crossed with a green seeded plant, what ratio of yellow and green seeded plants would you expect in F1 generation?
50:50
9:1
1:3
1:3
Phenotype of an organism is the result of
mutations and linkages
cytoplasmic effects and nutrition
environmental changes and sexual dimorphism
environmental changes and sexual dimorphism
In Mendel's experiments with garden pea, round seed shape (RR) was dominant over wrinkled seeds (rr), yellow cotyledon (YY) was dominant over green cotyledon (yy). What are the expected phenotypes in the F2 generation of the cross RRYY x rryy?
Only round seeds with green cotyledons
Only wrinkled seeds with yellow cotyledons
Only wrinkled seeds with green cotyledons
Only wrinkled seeds with green cotyledons
