Principles of I...

Material used for conducting experiments on genetic traits by Mendel was

Loss of one chromosome from one set is called

Assertion (A): In Klinefelter's syndrome, the chromosomal constitution of man is 22AA + XXY.
Reasoning (R): Few men have XX karyotype and yet are males. This is a rare phenomenon due to translocation of a small segment of Y chromosome attached to an X chromosome and is inherited in concert with X. Choose the correct option for the above statements.

In which of the following crosses will the progenies obtained be fifty percent homozygous recessive and fifty percent heterozygous?

The addition or deletion of one or more chromosomes in a set is called

Monohybrid ratio is

What would a gene be called if it is inherited by both males and females, but expressed differently in the phenotype of a boy and a girl?

The innate tendency of offspring to resemble their parents is called

A Barr body is present in a male child. The syndrome most likely to occur is

Chiasmata formation in Drosophila

Phenylketonuria is a genetic disorder of

A cross between yellow round and green wrinkled seed pea plants gave the following four types of progeny in equal proportions: yellow round, yellow wrinkled, green round and green wrinkled. The genotypes of the parents in this case must be 

Drosophila flies with XXY genotype are females, but human beings with such genotype are abnormal males. It shows that

The genotypic ratio in a monohybrid cross is

Who is regarded as the father of genetics?

Which of the following chromosome numbers is present in a trisomic individual?

When chromosome sets are present in multiples of 'n', the condition is called

Sex-influenced genes are coded by

'Gametes are never hybrid'. It is a statement of the law of

Genotype is the