Discuss the causes of variation Living organisms?
Causes of variation is random mutation. Random mutations constantly occur in the genomes of organisms; these mutations create genetic variation. If all living things were same, we will all use up one type of food as our nutrient source and eventually we will run out of food to consume.. making less likely for us to survive..
2 people found this useful
Bacteria, amoeba, molds. learn more on. www.bactirea.com
The ultimate source of variation is mutation. However, recombination, or crossing over, can produce enormous amounts of variation by shuffling alleles into different combinati…ons. Combined, the two processes produce the variation upon which natural selection can act, and which results in evolution.
There are several causes for variation that occur within apopulation. Some of these causes include neutral mutations, sexualreproduction, and diploidy.
variation are caused by meiosis as they split and swap bits of chromosomes to the daughter cells to create variation
recombination of alleles
Cross pollination, mutation and polyploidy lead to variations in the progeny
there are two things that cause variations, the environment and inheritance.
It is caused by crossing over in sexual reproduction and random mutations in DNA.
Aside from mutation the sexually reproducing variation is due to independent orientation of chromosomes in meiosis ( two ways the sister chromatids can line up in their tetrad…s ), crossing over ( non-sister chromatids exchanging sections of genetic material ) and random fertilization in which male and female gametes randomly come together to form zygotes.
the variations in genes, genes of sexually reproducing organisms will vary due to crossing-over of genes, mutations, and adaptations. In asexually reproducing organisms genes …will vary through adaptations and mutations.
depends where you put it
Mutation of the genetic code causes DNA variation in organisms. For example, during DNA replication, one nitrogen base may be substituted for another, or an extra base can be …added, or a nitrogen base can be skipped. If any of these mutations occur during the formation of gametes (sex cells), then the offspring that receives the mutation may have a genetic disorder.
nonsense ,dum and crazy are the two types variation shown by living organisms.
My giant DICK!
Variation or traits are due to changes in the genes. The genes are found in the DNA and when they replicate, the process doesn't always work correctly. We have called these mu…tations. A few are positive for the species, some are negative (and are not passed on) and a few do not make any change at all.
Sexual reproduction causes most variation in organisms. This isbecause genes get mixed up in the process whereas in asexualreproduction the offspring is genetically identical …to the parent.
Many things: ionizing radiation, free radicals, various chemicals,copying errors, retroviruses, etc.