Chromosomal number in a cell of a flowering plant is

If a plant heterozygous for tallness is selfed, the $F_2$ generation has both tall and dwarf plants. This proves the principle of

When experimenting with the factor of tallness in Pisum sativum, Mendel obtained the results $73.97\%$ tall and $26.03\%$ dwarf from one of the cross. This shows that the parents are

When two individuals are similar in external appearance but differ in their genetic make up, they are called as

Which of the following statements are false?

$I.$ A Dominant allele determines the phenotype when paired with a recessive allele

$II.$ A recessive allele is weaker than a dominant allele

$III.$ A recessive allele do not shows its effects when paired with a dominant allele

$IV.$ A dominant allele is always better for an organism

An allele is said to be dominant if