Question

The characteristic of having red flower is called dominant
recessive characteristic, and that having white flowers is called recessive characteristics why
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Answer 1

Here the trait is color of the flower and not the height or shape of the seed. So if the dominant trait is red color, the opposite character or comparative character is recessive trait. In this case opposite of red color is the absence of color which is white color flower. So, the correct answer is 'White flower'.

Answer 2

The colour of the flower(red or white) is determined by the alleles of the gene that are inherited.

Alleles are two different forms of a gene, "R" and "r" are different forms of the gene that determines flower colour.

Here, there are two alleles, R(red) and r(white), where R is dominant allele while r is recessive allele.

If the genotype of the offspring when the zygote has formed is RR (homozygous dominant) or when one copy each of R is inherited from each parent and the flowers are red.

If the genotype of the offspring when the zygote has formed is Rr (heterozygous dominant), the flowers are also red as R is dominant over r, hence the trait of r(white flowers) remains unexpressed and the flowers are red.

If the genotype of the offspring when the zygote has formed is rr (homozygous recessive) or when one copy each of r is inherited from each parent and the flowers are white.