A. 25%
B. 50%
C. 75%
D. 100%
Related Mcqs:
- If a pure tall plant is crossed with a pure dwarf one, the ratio of tall pure dwarf in the F 2 generation after selling F1 plant will be___________________?
A. 1:1
B. 1:2
C. 2:1
D. 3:1 - When red tall plant is crossed with dwarf white plant all the plants of F, are found to be tall red. which of the following ratio will be available when a test cross is made_________________?
A. 3:1
B. 1:2:3
C. 1:1:1:1
D. 1:2:1 - The crossing of a yomozygous tall plant and a homozygous dwarf plant would yield plants in the ratio of_________________?
A. 2 tall: 2 dwarf
B. All homozygous dwarf
C. All the heterozygous tall
D. One homozygous tall, one homozygous dwarf, two heterozygous tall - When a wheat variety with red kernels (homozygous for two non allelic and independent dominant genes) is crossed with white kenneled wheat (homozygous for two recessive non allelic independent genes), the phenotypic ratio in the F2 generation would be________________?
A. 9:3:3:1
B. 9:7
C. 9:9:9:3:3:3:1
D. 1:4:6:4:1 - If a plant heterozygous for tallness is selfed, f2 feneration has both tall and dwarf plants. this proves the principle of__________________?
A. Dominance
B. Segregation
C. Independent assortment
D. Incomplete dominance - A useful process for determining whether an individual is homozygous or heterozygous is_____________________?
A. Cross breeding
B. Back crossing
C. Self fertilization
D. Inbreeding - In a monohybrid cross, 2 heterozygous individuals were crossed, phenotypic ratio came to be (2:1), it is due to__________________?
A. Dominant lethal genes in heterozygous individuals
B. Dominant lethal genes in homozygous individuals
C. Dominant epistasis
D. None of the above - Red flower pea plant is crossed with the white flowered pea plant, F1 is red; with flower color is ______________________?
A. Dominant
B. Recessive
C. Non-genetic
D. Unexpressive - When an albino plant of maize (female) is crossed with normal green plant (male) all plants in the progeny are albino because___________________?
A. Albinism is dominant over green characters
B. Green plastids of male parent become nitrated
C. Plastids are inherited through maternal parents
D. Crossing over results in structural changes in green plastids - Suppose that out of 1000 offspring’s in the generation of a dithered cross, 748 are tall and hairy, 6 are tall and smooth, 4 are short and hairy and 242 are short and smooth. what is the explanation for this kind of ratio ?
A. Linkage and crossing over
B. Presence of multiple alleles
C. Presence of lethal genes
D. Sex-linkage
