URGENT.
workout a cross if a pea plant with violet flowers is crossed with another pea plant with white flower. mention the ratio and type of cross.
Answers
Monohybrid cross - one pair characters
ratio - phenotype - 3:1 as there will be 3 violet and 1 white flower
The ratio obtained in F1 generation if a pea plant with violet flowers is crossed with another pea plant with white flower the ratio obtained is 4:0, ie all four progeny are heterozygous tall.
The type of cross is monohybrid cross.
Explanation:
The pea plant with violet colour is dominant to white colour flower.
The allele for voilet is WW and for white is ww.
The cross between white and violet plants that are homozygous will produce
violet heterozygous flowers
The cross is shown in punnet square
W W
w Ww Ww
w Ww Ww 4:0 all flowers are purple phenotype and genotype ratio are same.
The cross between heterozygous tall and white flowers would yield
w w
W Ww Ww
w ww ww 1:1 is the phenotype and genotype ratio.
Since only one trait i.e. colour is involved in the cross it is a monohybrid cross. The alleles for the genes are present on the same locus. The cross between homozygous dominant and homozygous recessive yield a different genotype. These are the reasons that it is a monohybrid cross.
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