Answer:
Eye color depends upon the amount of melanin pigment in the eye.
Explanation:
- Melanin is a brown pigment that is responsible of eye color in the iris.
- The genes are located next to the OCA2 gene.
- When the amount of melanin is in less amount in the iris, it causes change in eye color that may be grey, hazel or blue.
- But when the quantity of melanin is very least,it causes blue color in the iris.
- Blue color is also caused by genetic mutation in an individual.
Answer:
Transcription
Explanation:
Transcription is the first process of gene expression involving the synthesis of a mRNA molecule from a segment of DNA (gene). Transcription is key to the production of proteins, which bring about biochemical activities, in every living organism. The process of transcription is catalyzed by an enzyme called RNA polymerase.
According to the question that describes a chemical found to be produced by a tropical tree that kills insects. The chemical is discovered to deactivate RNA polymerase enzyme in the insect. This utterly means the chemical is interfering with the process of transcription of genes in the insect because transcription cannot occur without RNA polymerase.
Answer:
Darwin gave the concept in evolution of species.
Explanation:
- As we know the tree of life is quite massive and comparing it needs to be understood well in terms of fossils that were once hidden inside the layers of earth rock masses. The tree is phylogenetic representing the unique ancestral history of every creature.
- Analyzing their morphological, behavioral and habitats are mostly evaluated in the tree of life
- One major challenge is to find the roots of life for the evolutionists.
- Finding out the nature of the last common ancestor.
- Some theories suggest that the same ancestor has the same common history of origin may lead to confusion of evolutionist as acing them becomes difficult.
Answer:
a struggle for existence, variation and inheritance. These are said to be the necessary and sufficient conditions for natural selection to occur.
Explanation:
