A pure tall plant (TT) is crossed with a pure dwarf plant (tt).
Draw Punnett squares to show (1) F1 generation (2) F2 generation.?
Open in App
Solution
Alleles:
Alleles are the two alternate forms of genes present on the same site of the chromosome.
Tall and dwarf are alleles for the character stem height. Tall plants are plants with elongated stems while dwarf plants are plants with short stems.
Tall plants with genotype TT will get expressed in the cross and hence are considered a dominant trait while dwarf plants with genotype tt will get suppressed and are known as a recessive trait.
If a pure tall plant (TT) and a pure dwarf plant (tt) are crossed, the first resultant offspring generation is called the F1 generation or Filial 1 generation.
F1 generation involves heterozygous tall plants (Tt).
When the plants from the F1 generation (Tt) are crossed, 3 tall and 1 dwarf planet will be obtained in the F2 generation.
The ratio obtained when two parent plants with one contrasting pair are crossed is known as the monohybrid ratio. Here the monohybrid ratio is 3:1.
