Question

When a trait is shown and at least one letter is upper case.

Answer 1

Answer:

When a trait is shown and at least one letter is upper case, it is a dominant allele (option A).

Explanation:

In genetics the presence of a dominant allele - represented by a capital letter - is sufficient to suppress a recessive allele, expressing the dominant trait in the phenotype.

Dominance is based on allelic combinations of the genotype, which are expressed in the phenotype for a given characteristic:

• Two dominant alleles (AA) express the only possible trait, dominant.
• One dominant allele and one recessive allele (Aa) show a dominant phenotype, as the former suppresses the latter.  It is a hybrid or heterozygous.
• Two recessive alleles (aa) show a phenotype with the recessive trait.

The other options are not correct, because:

    B) Recessive  is the allele that is only expressed in the phenotype when there is a pair in the gene.

    C) Trait  is equivalent to a characteristic.

    D) Allele represents the different ways in which a gene is expressed.

Answer 2

Answer:

maybe trait?

Explanation:

dunno lol