Many things: ionizing radiation, free radicals, various chemicals, copying errors, retroviruses, etc.
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..
Causing a ozone hole causes damage to all organisms. These organisms are the living creatures.
It causes diseases
Lethal Mutation.
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.
This is b'coz it creates variations in the characteristics of 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..
Causing a ozone hole causes damage to all organisms. These organisms are the living creatures.
It harms them. It causes various fatal diseases on living organisms.
It causes diseases
transpiration
There is no single type of mutation that causes Hemophilia A. It is not the type of mutation but rather the location of the mutation within the genetic code.
Deletion Mutation causes DiGeorges Syndrome.
Lethal Mutation.
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.
harmful mutation
Mutation