Science : Ch 09 – Heredity and Evolution

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

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?

A woman has only daughters which

Laws of inheritance were proposed by

The major function of cellular DNA is

Bacteria have a simpler body plan when compared with human beings. Does it mean that human beings are more evolved than bacteria?

Total number of chromosomes along with the sex chromosomes that are present in a human female and a human male.

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

Who is the Father of Genetics ?

Exchange of genetic material takes place in:

Name the organ analogous to the wings of birds.

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

In human males, all the chromosomes are match up perfectly except one. These unpaired chromosomes are:

1. Large chromosome
2. Small chromosome
3. Y chromosome
4. X chromosome

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: