Heredity And Evolution Mock Tests

In Mendel's dihybrid cross (RrYy × RrYy), the ratio of phenotypes in the F₂ generation is:

In Mendel's monohybrid cross between TT and tt pea plants, the phenotype ratio in the F₂ generation is:

In the periodic classification of elements (as used by Mendeleev), the basis was:

Mendel crossed tall pea plants with dwarf pea plants. The F₁ generation consisted entirely of tall plants. When F₁ plants were self-pollinated, the F₂ generation showed a phenotypic ratio of:

Which of the following statements about the arrangement of groups and periods in the modern periodic table is correct?

In the periodic table, elements in the same group have the same number of:

In Mendel's experiment, when pure tall pea plants (TT) were crossed with pure short pea plants (tt), what was the phenotype of the F₁ generation?

In humans, the sex of the unborn child is determined by: