Question

How do you explain dominat and recessive character by using mendelian experiments?

Answer 1

According to Mendel 's experiment :

The trait which appear in all the number of F1 generation &also in 75 % members of F2 generation obtained by self fertilisation of F1 generation is dominant character.

The trait after self fertilisation of F1 generation, reappears in 25% of F2 generation is known as recessive.

I hope it helps u.......

......

.....

Answer 2

Gregor Mendel's principles of inheritance form the cornerstone of modern genetics. So just what are they?

Aa Aa Aa

Ever wonder why you are the only one in your family with your grandfather's nose? The way in which traits are passed from one generation to the next-and sometimes skip generations-was first explained by Gregor Mendel. By experimenting with pea plant breeding, Mendel developed three principles of inheritance that described the transmission of genetic traits, before anyone knew genes existed. Mendel's insight greatly expanded the understanding of genetic inheritance, and led to the development of new experimental methods.

Figure 1

Figure Detail

Traits are passed down in families in different patterns. Pedigrees can illustrate these patterns by following the history of specific characteristics, or phenotypes, as they appear in a family. For example, the pedigree in Figure 1 shows a family in which a grandmother (generation I) has passed down a characteristic (shown in solid red) through the family tree. The inheritance pattern of this characteristic is considered dominant, because it is observable in every generation. Thus, every individual who carries the genetic code for this characteristic will show evidence of the characteristic. In contrast, Figure 2 shows a different pattern of inheritance, in which a characteristic disappears in one generation, only to reappear in a subsequent one. This pattern of inheritance, in which the parents do not show the phenotype but some of the children do, is considered recessive. But where did our knowledge of dominance and recessivity first come from?