In the hexaploid wheat, the haploid $(n)$ and basic $(x)$ numbers of chromosomes are
$n = 21$ and $x = 21$
$n = 21$ and $x = 14$
$n = 21$ and $x = 7$
$n = 7$ and $x = 21.$
Crossing over that results in genetic recombination in higher organisms occurs between
The sex in Drosophila melanogaster is determined by
Preformation theory concerning transmission of characters was given by
How many true breeding pea plant varieties did Mendel select as pairs, which were similar except in one character with contrasting tralts$?$