A feature of a pedigree that indicate that a certain trait is a dominant trait is that one of the parents always have to have the trait.
There are, however, autosomal dominance and X-linked dominance.
For an autosomal dominant trait:
- Appears equally frequent in both sexes.
- Both sexes transmit the trait.
- Present in all generations.
- When one parent has the trait and the other doesn't, approximately half of the offspring will present the trait.
For a X-linked dominant trait:
- Both male and females can present the trait, but more females usually present it.
- Sons with the trait always have a mother that presents the trait as well.
- Daughters with the trait always have either a mother or father that presents the trait, or both.
- Fathers with the trait always have daughters with the same trait.
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Answer:
Instead, polygenic traits exhibit incomplete dominance so the phenotype displayed in offspring is a mixture of the phenotypes displayed in the parents. Each of the genes that contributes to a polygenic trait, has an equal influence and each of the alleles has an additive effect on the phenotype outcome.
Explanation:
Answer:
The correct answer will be option-F
Explanation:
The modern medical, molecular and genetic studies are performed on the model organism like C. elegans, mice and many others.
The reason for the studies is that the life span of these organisms is of short duration as compared to humans. These organisms are also made of cells which are sensitive to their environment as humans.
The studies have shown that this organism shows an orthology relationship in their genes due to the origin of the genes from the same ancestral genes.
Thus, option-F is the correct answer.
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