What does dominant and recessive mean for kids?

= Dominant refers to the relationship between two versions of a gene. Individuals receive two versions of each gene, known as alleles, from each parent. If the alleles of a gene are different, one allele will be expressed; it is the dominant gene. The effect of the other allele, called recessive, is masked.

What are dominant and recessive traits explain with examples?

Dominant and recessive traits exist when a trait has two different forms at the gene level. The trait that first appears or is visibly expressed in the organism is called the dominant trait. The trait that is present at the gene level but is masked and does not show itself in the organism is called the recessive trait.

What is dominant trait for kids?

A dominant trait is an inherited characteristic that appears in an offspring if it is contributed from a parent through a dominant allele.

What are dominant and recessive traits class 12?

A recessive trait is always homozygous ‘aa’. Dominant traits are the traits that are always expressed in the progeny when the dominant allele is present in either one or two copies. A dominant trait can be homozygous or heterozygous ‘AA’ or ‘Aa’.

What are some common dominant traits?

Common recessive traits include nearsightedness, colour blindness and night blindness. Farsightedness is a dominant trait. Normal vision as opposed to farsightedness is a common recessive trait, while normal vision as opposed to nearsightedness, colour blindness and night blindness are common dominant traits.

What does it mean to have a dominant trait?

A dominant trait refers to a genetic feature that hides the recessive trait in the phenotype of an individual. A dominant trait is a phenotype that is seen in both the homozygous AA and heterozygous Aa genotypes. Many traits are determined by pairs of complementary genes, each inherited from a single parent.

What does it mean if a trait or allele is dominant?

An allele is dominant if it masks the presence of other alleles. This means that if an organism has one allele of this type, it will show the characteristics of this trait. For example, in humans, dark hair is dominant over blonde hair.

What can be dominant or recessive?

Whether an allele is dominant or recessive depends on the particulars of the proteins they code for. The terms can also be subjective, which adds to the confusion. The same allele can be considered dominant or recessive, depending on how you look at it. The sickle-cell allele, described below, is a great example.