List of top Plant Sciences Questions

How many linkage groups are present in maize (Zea mays L.)?
The yield of inbred A is 40 q/ha, inbred B is 20 q/ha, check hybrid yield is 45 q/ha and the yield of hybrid (A × B) is 50 q/ha. The standard heterosis (%) is:
What are the genotypes that will be included in the trial for the estimation of heterobeltiosis?
What is the probability when both parents with blood type 'A' and normal vision (not colourblind) produce their 1st son, who has blood type 'O' and is colour blind?
In a sexually reproducing organism, the chromosome number in the progeny does not double even after fertilization. The reason is that the male and female gametes contain:
An organism has haploid chromosome number 7. The probability that a sperm produced by it will contain all the 7 chromosomes whose centromeres were derived from the maternal homologue is:
To produce a variety having all the desirable characters of two varieties without much segregation, the method adopted is:
The possible number of 'triplet' codons from 6 different types of nucleotides in the DNA molecule is:
When two self-incompatible but cross-compatible parental lines are inter-planted, the seeds harvested from both the self-incompatible lines will be:
In a cross (AaBbCCDdEE) × (AABbCcDdEe), what is the probability that any particular gamete from the female parent will be AbCdE?
The allelic combination of the variety 1 is AAbbCCddEE and has the phenotype of 6 yield units. The allelic combination of variety 2 is aaBBccDDe and has 4 yield units. What would be the yield unit and heterosis (over the better parent) unit of the F1 (if there is complete dominance)?
Which of the following plant cell organelles is considered as semi-autonomous?
Which of the following is true for synthetics?
In a crop, genes 'C' and 'P' are required for the development of color in the flowers. The white flowers are produced in the absence of either or both the genes. What will be the percentage of colored flowers in the off-springs of the cross CcPP × ccPp?
The maximum period for which a variety can be protected under the PPV&FR Act is:
In which of the following seed storage conditions, the longevity of the seeds would be maximum?
Which of the following stages of cell division is primarily arrested by treating with colchicine, used in polyploidization of plants?
The genome of Triticale is designated as
In India, a variety is considered as 'Extant variety' when it is:
The seed dormancy can be detected by
The tag for Breeders Seed is issued by:
The recommended isolation distance for seed production of Foundation seed stage of Brinjal is:
Cell theory was put forward by
The chief sugar transported in the phloem is
The first product to be tagged with GI in India is: