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How many Genotypes are Possible in F2 Generation, if a Character is Controlled by 3 Pairs of Polygenes?

1) 7 2) 14 3) 27 4) 34 Answer:3) 27 Explanation: The number of different possible genotypes in the F2 generation is equal to 3n. Here, n = 3... View Article

In Mendelian Dihybrid Cross, out of 256 Individual Obtained in F2 Generation, How many are Pure Homozygous for Both Traits?

1) 32 2) 16 3) 8 4) 48 Answer:1) 32 Explanation: In a dihybrid cross, 2 out of 16 individuals in the F2 generation are homozygous for both... View Article

Assertion: Resins and Gums are Stored in Old Xylem Tissue in Plants.

Assertion: Resins and Gums are Stored in Old Xylem Tissue in Plants. Reason: Resins and Gums Facilitate Transport of Water Molecules. 1) Both... View Article

In a cross between individuals homozygous for (a,b) and wild type (+ +). In this cross 700 out of 1000 individuals were of parental type. Then the distance between a and b is 70 map unit, 35 map unit, 30 map unit, 15 map unit

During recombination, parental genes are exchanged, resulting in a progeny with a new phenotype. This progeny is a recombinant progeny. The... View Article

At how many steps decarboxylation occurs in the Krebs cycle?

The phenomenon of removal of carboxyl groups from a particular compound along with the liberation of a molecule of carbon dioxide is termed... View Article

Inner lining of ducts of sweat gland and pancreatic duct are formed of which epithelium?

Transitional, pseudostratified, stratified cuboidal, stratified non-keratinized squamous. The inner lining of ducts of the sweat gland and... View Article

Cannabis sativa yields?

Bhang, Ganja, Charas, All of these Belonging to the genus Cannabis, Cannabis sativa (Hemp) is a flowering plant. It is known to comprise certain... View Article

Anthesis is absent in cleistogamy because?

No pollination is required It allows xenogamy It assures heterozygosity It favors insect pollination Anthesis is the opening of the flower... View Article

Epidermis in stem is produced from – Protoderm, Procambium, Ground meristem, Calyptrogen

The epidermis is the outermost layer of cells in the stem. It is produced from Protoderm. As per the functionalities, the primary meristem of... View Article

Vaccine against poliovirus is an example of.

Auto immunization, Passive immunization, Active immunization, Simple immunization. It is an example of Active immunization. The purpose of... View Article

Draw the schematic diagram of the circulatory system of a human and label the following parts- i)heart ii) aorta iii) capillaries iv) vena cava

The diagram provided below depicts the circulatory system seen in humans, which is double circulation. The labelings are as seen in the... View Article

Person having genotype IA IB would show the blood group as AB. This is because of – Pleiotropy, Codominance, Segregation, Incomplete dominance

It is because of codominance. In codominance, neither allele can suppress the expression of the other allele. This is typically observed in the... View Article

Mac Arthur observed that five closely related species of warblers living on the same tree were able to avoid competition and co-exist by behavioral differences. This is an example for: Competitive release, Resource partitioning, Competitive exclusion principle, Adaptive radiation?

It is a classic example of resource partitioning. In an ecological niche, Resource partitioning is the splitting of restricted resources by the... View Article

In nitrogen cycle nitrite is converted to nitrate by?

The nitrifying bacteria in addition to the bacteria found in the soil are involved in converting the ammonia to nitrate. In the initial stages of... View Article

Which of the given traits of pea plants selected by Mendel expresses itself only in homozygous conditions? Terminal flower, Green seed, Yellow pod, Constricted pod, Violet petals, Dwarf stem.

Mendel's Law of dominance comes into play when his experiments on inheritance are discussed. Dominant alleles are always expressed, while... View Article

A healthy person eats the following diet, 5 gm sugar, 10 gm albumin, 10 gm ghee, 20 gm bread, 15 gm salad and 4 litres of water. How many calories is he likely to get?

Calories are units of energy. One calorie indicates the amount of heat released in order to increase the temperature of one gramme of water by... View Article

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