PRACTICE TEST- 1-Class 10 -Science-Biology-Chapter 8 :Heredity and Evolution

Mendel's experiments on dihybrid cross was based on

The sequence of gradual changes which takes place in the primitive organisms over millions of years in which new species are produced is known as

How are variations created?

Which of the following is true about chromosomes?

The only progressive trend in evolution seems to be that more and more ____________ body designs have emerged overtime.

A pure dominant pea plant producing round yellow seeds is crossed with pure recessive pea plant producing wrinkled green seeds. The number of plants bearing round green seeds in the F1 generation of Mendel's experiment is:

In 1952, when still a graduate student, he circulated water, ammonia, methane and hydrogen, pass an electric discharge to simulate lightning and got complicated molecules associated with life such as amino acids. This experiment was one of the first great experiments which proved that life indeed could arise from non-living matter. 

What are the main theories about how humans got to the America?

Which of the following statements (A - E) are wrong:

The phenomenon where individuals of a species exhibit differences in characteristics are called:

A pea plant with yellow and round seeds is crossed with another pea plant with green and wrinkled seeds that produced 49 yellow round and 49 yellow wrinkled seeded pea plants. The genotype of parent plant with yellow round seeds must be:

The characteristics of the second generation organisms produced asexually will be

A brown-eyed couple has a blue-eyed child. The trait of brown eye (B) is dominant over that of blue-eyed (b). What is the genotype of the couple?

Inheritance from the previous generation provides

Mendel's experiments on dihybrid cross was based on

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

Mendel's Law of independent assortment stated that:

In humans, sex is determined by :

Among the following which is not one of the direct conclusion that can be drawn from Mendel's experiment?