It allows the scientist to determine the age of the rock it is in
They can be described through GENOTYPE because dominant always shows through phenotype.
Organ, in biology, a group of tissues in a living organism that have been adapted to perform a specific function. In higher animals, organs are grouped into organ systems; e.g., the esophagus, stomach, and liver are organs of the digestive system.
Examples of allele types are HH. That is option 2.
<h3>Gene Allele </h3>
An allele in genetic studies is an alternative gene form that is located at a particular point of the chromosome. It is usually represented with capital and small letter of the same alphabet.
There are two types of a allele which include:
- Dominant allele: This is when the variation seen in a gene produces a noticeable phenotype. This is seen in the gene combination of HH.
- Recessive allele: This type of allele does not produce any visible noticeable phenotype. This is seen in hh.
Therefore, examples of allele types are HH
Learn more about allele here:
brainly.com/question/25813022
