If T represents the gene for tallness while t represents dwarfness. When a tall (TT) crop is crossed with a dwarf (tt) crop, the resultant crop will be

If T represents the gene for tallness while t represents dwarfness. When a tall (TT) crop is crossed with a dwarf (tt) crop, the resultant crop will be

Answer Details

When a tall (TT) crop is crossed with a dwarf (tt) crop, the resultant crop will be 100% tall (Tt) in the first generation of offspring. This is because tallness (T) is dominant over dwarfness (t), meaning that even if one copy of the tallness gene is present (Tt), the plant will exhibit the tall phenotype. Therefore, all of the offspring in the first generation will be heterozygous (Tt) and tall. If two of these heterozygous plants (Tt) are crossed, the resulting offspring may be tall (TT), dwarf (tt), or heterozygous and tall (Tt) in a 1:2:1 ratio, respectively. This is known as a monohybrid cross and follows Mendelian genetics.