Science : Ch 09 – Heredity and Evolution

The gene type of green stemmed tomato plants is denoted as GG and that of purple stemmed tomato plants as gg. What colour of stem would you expect in F1 progeny when these two are crossed?

The gene type of green stemmed tomato plants is denoted as GG and that of purple stemmed tomato plants as gg. What colour of stem would you expect in F1 progeny when these two are crossed?

What were his fndings with respect to inheritance of traits in F1 and F2 generation by Mendle?

What is the phenotypic ratio obtained in Mendels dihybrid cross

Select correct option about variation?

1. The differences in characteristics between individuals of the same species is called variation.
2. Variations arise in organisms during the process of copying the DNA due to which the DNA copies will be similar but not identical to the original

The first person to give scientific explanation for the mechanism of transmission of characters from parents to the offsprings.

A zygote which has an Y chromosome inherited from the father will develop into a

A trait in an organism is infuenced by:

From the list given below, select the character which can be acquired but not inherited:

The number of pair(s) of sex chromosomes in the zygote of humans is

The two versions of a trait (character) which are brought in by the male and female gametes are located on:

As claimed by the evolutionary theory, formation of a new species is generally due to

Choose the statements that describe the characteristics of genes:

1. Genes are specifc sequence of bases in a DNA molecule
2. A gene does not code for proteins.
3. In individuals of a given species, a specifc gene is located on a particular chromosome.
4. Each chromosome has only one gene

Which one is a Feasible progeny in F2 generation of pure bred tall plant with round seed and dwarf plant with wrinkled seeds?

In peas, a pure tall plant (TT) is crossed with a pure short plant (tt). The ratio of pure tall plants to pure short plants in F2  generation will be: