These genes could have arisen by gene duplication.
<h3>What is gene duplication?</h3>
Gene duplication is the process of copying a section of DNA that codes for a gene. A retro transposition event or a recombination mistake are both potential causes of gene duplication. As a result, the duplicate gene coding may experience a significant number of modifications throughout time. This might prevent the gene from functioning or, in other situations, give the creature a benefit.
Gene duplication is a phenomenon that can happen through a variety of ways:
- Ectopic Recombination: Uneven crossing-over between misaligned homologous chromosomes during meiosis might result in duplications. A duplication at the exchange site and a reciprocal deletion are the results of this recombination.
- Replication Slippage: Short genomic sequences can be duplicated as a result of the replication error known as replication slippage. DNA polymerase starts copying the DNA during replication, but eventually the polymerase separates from the DNA, causing replication to stall. The replicating strand is incorrectly aligned when the polymerase reattaches to the DNA strand, which accidentally results in several copies of the same portion.
- Aneuploidy: When a single chromosome's nondisjunction causes an abnormally high number of chromosomes, this condition is known as aneuploidy. Aneuploidy is frequently damaging and frequently causes spontaneous miscarriages in mammals. Some aneuploid people can survive. For instance, human trisomy 21 causes Down syndrome but is not lethal.
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Answer:
double helix, which is made up of a nitrogenous base, a five-carbon sugar (deoxyribose), and a phosphate group. There are four nitrogenous bases in DNA, two purines (adenine and guanine) and two pyrimidines (cytosine and thymine).
Explanation:
House Cat: Felis catus
Mountain Lion: Felis concolor
Domestic dog: Canis lupus familiaris
Human: Homo sapiens
Explanation:
- The cat (Felis catus) is a kind of domestic species of small carnivorous mammal. It is the only domestic species in the family Felidae and is often referred to as the domestic cat to get varied from the wild members of the family.
- The mountain lion's scientific name is Puma concolor,
- The domestic dog is a member of the family with genus Canis (canines), which forms a basic part of the wolf-like canids, and is the most widely abundant terrestrial carnivore.
- Humans belong to a family called Homo sapiens.
the bilateral infection on the testes from mumps can result to Infertility examples in the males who are past puberty and develop mumps, about thirty percent of these infection in these males will develop to orchitis which develop resulting to testicular atrophy.
I believe it's "pollen".
When the pollen grains are washed down into lakes/rivers, scientists can take a sample of the sediment layers and see what plants were growing at that time. They can then make inferences about the climate and how that affected the plants growing there.
Hope this helps!
