Answer:
-A single gene can influence multiple traits.
-A single trait can be controlled by multiple genes.
Explanation:
1. A single gene influences two or more phenotypic traits known as a pleiotropic gene. Pleiotropy is common in the genetics of complex disease.
Example: Phenylketonuria
It is an inherited disorder in which the level of phenylalanine is increased in the human body. This is happening because of the defect in a single gene on chromosome 12 that codes for phenylalanine hydroxylase (enzyme). This enzyme affects multiple system e.g., nervous and integumentary systems.
2. A polygenic trait is one whose phenotype is influenced by more than one gene. Polygenic traits are also controlled by environmental factors.
Example: Height, Skin color
These traits show continuous distribution because they are also controlled by many different genes. Epigenetics and environmental factors are also involves.
Mandalian (inherited) traits are controlled by different genes.
<span>Summer temperatures in the Arctic remain cool, fluttering around zero in many places, from June through September. In fact, Arctic residents must frequently heat their homes all year long. Neighbourhoods near the sea tend to remain close to 0°C throughout the summer, but inland areas, particularly in the south, regularly reach 7°C–13°C, and hardly as much as 20°C. One reason for the opposition is that the sea ice, which gradually melts, consumes much of the sun's energy, giving little to heat the air over it.
Hope this helped! :)</span>
Model it literally says a plastic replica
The signal transduction pathways<span> recruited by the receptors of these hormones and growth factors </span>are<span> of particular interest.
Im not too sure about this might wanna check it.</span>
