Adenine and thymine are complementary to one another as are guanine and cytosine. There are two important<span> reasons why </span>DNA<span> is composed of complementary</span>bases<span>. ... The second reason is that the </span>pairs<span> of </span>bases<span> are complementary because their chemical structure allows for strong hydrogen bonding and they fit together well.</span>
A homologous chromosome pertains to one of a pair of chromosomes with the same gene sequence, loci, chromosomal length, and centromere location.
A homologous pair consists of one paternal and one maternal chromosome. In humans, there are a total of 46 chromosomes in the nucleus of a somatic cell.
Doctors have not identified a specific cause or result but they think that there are risk factors like:
- advancing age
- family history
-umheathly life style choices
- taking certain medicine
and just in case you did not know what osteoporosis is it is a common disease that weaken the bone and as they weaken you have a higher risk of unexpected fractures