All genes located on the same chromosome:

1.	Form different groups depending upon their relative distance
2.	Form one linkage group
3.	Will not from any linkage groups
4.	Form interactive groups that affect the phenotype

Conditions of a karyotype 2n +1, 2n –1 and 2n + 2, 2n – 2 are called:

If a genetic disease is transferred from a phenotypically normal but carrier female to only some of the male progeny, the disease is:

In a certain taxon of insects, some have 17 chromosomes and others have 18 chromosomes. The 17 and 18 chromosome-bearing organisms are:

1. males and females, respectively

2. females and males, respectively

3. all males

4. all females

The inheritance pattern of a gene over generations among humans is studied by pedigree analysis. The character studied in the pedigree analysis is equivalent to:

It is said that Mendel proposed that the factor controlling any character is discrete and independent. His proposition was based on the:
 

In a plant, red fruit (R) is dominant over yellow fruit (r), and tallness (T) is dominant over shortness (t). A plant with RRTt genotype is crossed with a plant of rrtt genotype. The progeny is:
1. All red fruit, tall 25%
2. All red fruit, tall 50%
3. All red fruit and tall 75%
4. All red fruit and tall.

Which of the following is the most suitable medium for the culture of Drosophila melanogaster?

A human male produces diallelic sperms in equal proportion AB, Ab, aB, and ab. The genotype of the person would be:

The most popularly known blood grouping is the ABO grouping. It is named ABO and not ABC, because “O” in it refers to having: