Heather gave me this poem yesterday. It's by W.H. Auden. I really like it; and it can be read with one specific relationship in mind or as a description of our overall experience of life (with God): That night when joy began. Our narrowest veins to flush, We waited for the flash. Of morning's leveled gun.
The effects of mutations Since all cells in our body contain DNA, there are lots of places for mutations to occur; however, some mutations cannot be passed on to offspring and do not matter for evolution. Somatic mutations occur in non-reproductive cells and won't be passed onto offspring. For example, the golden color on half of this Red Delicious apple was caused by a somatic mutation. Its seeds will not carry the mutation. The only mutations that matter to large-scale evolution are those that can be passed on to offspring. These occur in reproductive cells like eggs and sperm and are called germ line mutations. Effects of germ line mutations A single germ line mutation can have a range of effects: 1  No change occurs in phenotype. Some mutations don't have any noticeable effect on the phenotype of an organism. 2  Small change occurs in phenotype. A single mutation caused this cat's ears to curl backwards slightly. 3  Big change occurs in phenotype.
  A mutation is a permanent change in the DNA sequence of a gene.   There are two ways in which a DNA mutation can occur:   1) Mutations can be inherited.This means â¦ that if a parent has a mutation in his or her DNA, then the mutation is passed on to his or her children.   2) Mutations can be acquired.or example, this can happen during crossover during the formation of gametes. Substitution mutations happen when one nucleotide (the smallest unit of DNA) is replaced by another. These are caused by a number of chemicals that look like something in between both of those nucleotides.