Why is the progeny always tall when a tall pea plant is crossed with a short pea plant?

The maleness of a child is determined by

Select the incorrect statement.

Study the following cross and the self-pollination in $F_1$. Fill in the blank and answer the question that follows:
Parents: $RRYY \times rryy$
(Round,yellow) (Wrinkled,green)
$F_1$: $RrYy \times$ ?
(Round,yellow)
What are the combinations of characters in the $F_2$ progeny? What are their ratios?

"The chromosome number of the sexually reproducing parents and their offspring is the same." Justify this statement.

Select the incorrect statement.