Answer: Gene that arose through gene duplication, but by acquiring mutations became nonfunctional.
Explanation:
A gene is a functional unit of heredity formed by DNA. They possess a sequence of nitrogenous bases that during translation is read by ribosomes to produce molecules called proteins. A pseudogene is a DNA sequence that resembles a gene, but which has been inactivated in the course of evolution by mutations in its sequence. Thus, it is a gene that derives from other known genes and whose functions are different, <u>may have lost their functionality or have radically changed </u>it. To this day, it is not known exactly how pseudogenes are created, however some theories are as follows:
1. A gene duplication can generate two copies of a gene when only one is needed. A mutation would then occur that deactivates one of the copies. In addition, the duplication event may not be complete, so that the copy has incomplete promoters.
2. They may be fragments of the messenger RNA transcript of a gene may be spontaneously reverse transcribed and inserted into the chromosomal DNA. They lack the promoters of normal genes, so they are not expressed normally.
3. A gene may become non-functional or inactivated if such a mutation becomes fixed in the population. This can occur by normal means such as natural selection or genetic drift.
Answer:
if true or false,
the answer will be false
Explanation:
The old growth forests are full of full of the trees that are rich in the valuable timber, while environmentalists seek to preserve the forests for its benefits.
These old grown trees are economically very important and it serves animals in providing habitat and food. There are huge variety plants and trees that can be used for the medical purposes too.
The large and old trees have strong and big wooden pieces that can be used in logging industry.
Answer:
B - Repeating the experiment gives the same results.
Explanation:
For more reliable results in an experiment it must be repeated multiple times to see if the data is accurate.
Hope it helps! :D
Aerobic is with oxygen and anaerobic is without oxygen.
Aerobic does not include lactic acid, while anaerobic includes lactic acid.
