What makes a phenotype dominant?

Organisms that reproduce sexually carry genes from each parent. … The genes that are expressed are responsible for your traits, or phenotype. A dominant phenotype is a trait resulting from a dominant gene.

How do you determine dominant phenotype?

Use the Hardy-Weinberg equilibrium.

  1. Alleles: p+q=1.
  2. p=frequency of the dominant allele. …
  3. p2=frequency of homozygous dominant genotype. …
  4. In your scenario, the dominant phenotype has a frequency of 0.19 .
  5. This is misleading, since both the p2 and 2pq terms represent the dominant phenotype. …
  6. If q2=0.81 , we can determine q .

What is phenotype example?

Examples of phenotypes include height, wing length, and hair color. Phenotypes also include observable characteristics that can be measured in the laboratory, such as levels of hormones or blood cells.

Is height a dominant gene?

Genes aren’t the sole predictor of a person’s height. In some instances, a child might be much taller than their parents and other relatives. Or, perhaps, they may be much shorter. Such key differences may be explained by other factors outside of your genes that contribute to height.

Is anyone dominant for every trait?

No organism has all dominant or all recessive genes. An organism may be pure in certain traits and hybrid others. Remember, that a dominant trait in one kind of organism may be a recessive trait in another organism. 1.

What are the 3 types of genotypes?

There are three types of genotypes: homozygous dominant, homozygous recessive, and hetrozygous.

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