Answer:
gain-of-function
Explanation:
Gain-of-function mutations represent a type of genetic change that may confer a new function to the gene that undergoes the mutation. In this case, a gain-of-function mutation conferred to the virus an adaptive advantage by allowing it to encode a new protein which is capable of attaching to the cell membrane of a new host. In this regard, it is important to note that loss-of-function mutations are quite common in nature, while gain-of-function mutations are relatively rare.
The event that was dated using the most valid and reliable source is millipede appears.
<h3>What is a reliable source?</h3>
In science, reliable sources include those that provide strong evidence to prove a hypothesis is false or true. The most common reliable sources in science are:
- Data that was collected from experiments using the scientific method.
- Observations that are consistent.
- Peer-reviewed articles about a phenomenon.
- Evidence such as specimens, fossils, rocks, etc.
Based on this, the event that was dated using the most valid and reliable resource is the millipede appearance because this event was dated using fossils, which are a type of reliable source in science. Moreover, other sources such as history books or green plants are not reliable.
Learn more about science in: brainly.com/question/935949
<span>Melanin is what makes the
color of the eyes, skin, and hair dark. The absence of melanin makes those body
parts lighter in color. Human traits are
controlled but monogenic traits, only one gene such as the eye base color
whether brown or blue.</span>
Answer:
A plant and animal cell both have a plasma membrane, ONLY a plant cell has a cell wall. Both of them have cytoplasm, a nucleus to guide them on what to do and ribosomes to produce protein. Only a plant contains a large vacuoles to store water and have chloroplast to do photosynthesis.
Explanation:
