How can you determine whether green or yellow is the dominant allele?
Since all the heterozygous offspring are yellow, then the yellow allele must be dominant over the recessive green allele. The green allele didn’t disappear; its effect is not seen in heterozygotes. Peas are yellow when they have either two yellow alleles . . . . . . or one yellow allele and one green allele.
When both alleles are the same this is known as?
An organism in which the two copies of the gene are identical — that is, have the same allele — is called homozygous for that gene. An organism which has two different alleles of the gene is called heterozygous.
Which Colour is dominant in pea plants?
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| Trait | Dominant Expression | Recessive Expression |
|---|---|---|
| Color of seed albumen (Y) | Yellow | Green |
| Color of flower (P) | Purple | White |
| Form of ripe pods (I) | Inflated | Constricted |
| Color of unripe pods (G) | Green | Yellow |
What were the results of Mendel’s experiments?
Upon compiling his results for many thousands of plants, Mendel concluded that the characteristics could be divided into expressed and latent traits. He called these dominant and recessive traits, respectively. Dominant traits are those that are inherited unchanged in a hybridization.
Which best describes a Mendelian trait?
The Mendelian trait are those controlled at only single gene locus. The Mendelian trait have two alleles (one form each parent), out of which one allele is dominant while the other is recessive. An example of the human Mendelian trait is the attached or detached earlobes.
What is an example that demonstrates the law of segregation?
For example, the gene for seed color in pea plants exists in two forms. There is one form or allele for yellow seed color (Y) and another for green seed color (y). When the alleles of a pair are different (heterozygous), the dominant allele trait is expressed, and the recessive allele trait is masked.
What is used to show the outcomes of a particular cross?
The Punnett square is a square diagram that is used to predict the genotypes of a particular cross or breeding experiment. It is named after Reginald C. Punnett, who devised the approach in 1905. The diagram is used by biologists to determine the probability of an offspring having a particular genotype.