Definition of Recessive and Dominant trait?

Answer 1

Dominant trait refers to a genetic feature that hides the recessive trait in the phenotype of an individual. A dominant trait causes the phenotype that is seen in a heterozygous (Aa) genotype. Many traits are determined by pairs of complementary genes, each inherited from a single parent. Often when these are paired and compared, one gene (the dominant) will be found to effectively shut out the instructions from the other, recessive gene. For example, if a person has one gene for blue eyes and one for brown, that person will always have brown eyes because they are the dominant trait. For a person to have blue eyes, both their genes must be blue (recessive). When a person has two dominant alleles, they are referred to as homozygous dominant. If they have one dominant allele and one recessive allele, they are referred to as heterozygous.
A dominant trait when written in a genotype is always written before the recessive gene in a heterozygous pair. A heterozygous genotype is written Aa, not aA.

The term "recessive gene" refers to an allele that causes a phenotype (visible or detectable characteristic) that is only seen in homozygous genotype (an organism that has two copies of the same allele) and never in a heterozygous genotype. Every person has two copies of every gene on autosomal chromosomes, one from mother and one from father. If a genetic trait is recessive, a person needs to inherit two copies of the gene for the trait to be expressed. Thus, both parents have to be carriers of a recessive trait in order for a child to express that trait. If both parents are carriers, there is a 25% chance with each child to show the recessive trait.
The term "recessive gene" is part of the laws of Mendelian inheritance created by Gregor Mendel. Examples of recessive genes in Mendel's famous pea plant experiments include those that determine the color and shape of seed pods, and plant height.

Hope that helps!!

Answer 2

Dominant Definition

Answer 3

Dominant can show its effects from a single parent. In the case of an African/American mating with a Caucasian the dominant gene is skin color. The offspring will likely be the same or lighter than the darker skinned parent.
Recessive on the other hand if present in only one parent will likely remain recessive.
If both parents have the recessive gene the odds of passing this on to the offspring rises dramatically. That is why it is risky to marry (have sexual relations) with a close relative...the have many similar genes.

Answer 4

A recessive trait is hidden unless you have two genes for this trait.

A dominant trait will show if you have one or two genes for the trait.

Example:
Curly hair (C) is dominant and straight hair (c) is recessive in a certain organism.

An organism with curly hair could have the genotype CC or Cc. Both of these genotypes will show the dominant trait since they both contain at least one dominant gene (C).

An organism with straight hair must have the genotype cc since this is the only way to exhibit the recessive trait.

Answer 5

i think a recessive trait makes a patterned appearance in generations, and a dominant trait is repeatedly found throughout generations.
i think :] sorry if im wrong!!

Answer 6

using a punnet square if the alleles for short hair is xx and long hair is dominent it would be Xx or XX becuase the dominant only needs one to show over the recessive

Answer 7

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