The so-called LH surge causes the release of the mature egg from the ovary-this is ovulation. Ovulation normally occurs 24 to 36 hours after the LH surge, which is why the LH surge is a good predictor for peak fertility. The egg can only be fertilised for up to 24 hours after ovulation.If it isnât fertilised the lining of the womb is shed (the egg is lost with it) and your period begins. This marks the start of the next menstrual cycle. While an egg only survives for up to 24 hours, sperm can remain active for up to five days.he so-called LH surge causes the release of the mature egg from the ovary-this is ovulation. Ovulation normally occurs 24 to 36 hours after the LH surge, which is why the LH surge is a good predictor for peak fertility. The egg can only be fertilised for up to 24 hours after ovulation.
DNA is the molecular code that codes for all proteins which make up life, a gene is a piece of dna that codes for one protein. A chromosome is a strand of DNA, this is where a number of genes are located, humans have 23 types of chromosomes and have two of each type.Erfie Â· 9 years ago.NA is the molecular code that codes for all proteins which make up life, a gene is a piece of dna that codes for one protein. A chromosome is a strand of DNA, this is where a number of genes are located, humans have 23 types of chromosomes and have two of each type. Erfie Â· 9 years ago.
Genes are the basic unit in the study of genetics. Each gene contains the specific code relating to the function of a single protein. Genes combine to form specific DNA molecules. The nucleus of the cell of an organism contains chromatin, which is complex combination of proteins and DNA. When cell division occurs during reproduction, the chromatin forms with the DNA into a chromosome.