True the asnwer is trueeeeeee
Answer:
The gene for beta-galactosidase turns off.
Explanation:
The gene that codifies the beta-galactosidase enzyme is part of the <em>lac</em> operon, which also contains two other genes that produce enzymes involved in the metabolization of lactose.
Between glucose and lactose, the bacteria will preferentially use glucose as an energy source. On the other hand, lactose is a dimer, and thus a series of enzymes are needed to process lactose before its use as an energy source.
If there is no lactose present, the genes contained inside this operon are turned off (the operon is repressed).
The presence of over 700 genes involved in height determination is an example of a polygenic trait.
<h3>What is a polygenic trait?</h3>
A polygenic trait refers to a trait that is determined by multiple genes rather than by only one gene. This is opposite to a monogenic trait that is determined by only one gene.
<h3>What are some examples of polygenic traits?</h3>
In humans, some examples of traits that are determined by multiple genes are:
- Height
- Hair color
- Skin color
Based on this, heigh is a polygenic trait.
Learn more about gene in: brainly.com/question/787658
<span>Antrophocentric ideas and beliefs involve believing that only human beings and human beings alone are of the utmost importance above all else, that the human self is of the total concern. It is a very "self" oriented set of ideas. Eccocentrists are particularly and primarily focused on the environment, preservation, and "green" movements.</span>
Answer:
if there was no photosynthesis, then we won't have plants. Plants will die out, and we will not get the oxygen needed to survive.
