Genetic traits are the result of ........

Mendel's experimental material was

Mendel studied seven traits of pea plants controlled by genes. On how many different chromosomes are these genes located?

In the case of $PTC$ tasters and non-tasters in humans,$T$ represents the dominant allele and $t$ represents the recessive allele. Which of the following genotypes is unable to taste $PTC$?

$A$ person has to perform crosses for the purpose of studying the inheritance of a few traits/characters. What should be the criteria for selecting the organisms?

$A$ test cross is useful to determine the...