Show by a series of diagrammatic sketches how at the end of meiosis II, four types of gametes are formed with two parental and two new combinations of the alleles of the genes.

The two daughter cells produced at the end of meiosis I when compared to the parent diploid cell will have:

How many types of combinations of gametes are possible in a monohybrid F_(1) parents

How many types of gametes are formed by a plant having AaBbCc genotype, in which A & B genes shows complete linkage.

How many molecular orbitals are formed by the combination of two lithium atoms?

A- The physical association between two genes is termed as ___ B- The generation of non parental gene combination is termed as ___

Explain the term temperature gradient. The two ends of a metal bar are maintained at two different consistant temperatures. On a single graph draw sketches to show the variation of temperature along the bar when its surface is (i) perfectly lagged and (ii) unlagged. Explain the shape of the two sketches.

Human skin colour is believed to be controlled by at least three seprate genes. (a) What do you call this type of inheritance? (b) Suppose the genes are designated as A, B and C and darkness is dominant over fairness, what shall be the genotypes of the darkest, fairest and intermediate skin colour? (c) What will be the total number of allele combinations in the gametes of a person heterozygous for all the three genes?

Match the type of immunity listed in column I with the examples listed in column II. Choose the answer that gives the correct combination of alphabets of the two columns

Two capillaries of same length and radii in the ratio 1 : 2 are connected in series. A liquid flows through them in streamlined condition. If the pressure across the two extreme ends of the combination is 1 m of water, the pressure difference across first capillary is

A person always prefers to eat parantha and vegetable dish in his meal. How many ways can he makes his platter in a marriage party if there are three types of paranthas, four types of vegetable dish, three types of salads and two types of sauces? a. 3360 b. 4096 c. 3000 d. none of these