pituitary dwarfism. caused by hyposecretion of growth hormone by pituitary gland at an early age, it slows growth and causes short and proportional stature; it is a congenital condition that can be treated during childhood with growth hormone therapy.aused by hyposecretion of growth hormone by pituitary gland at an early age, it slows growth and causes short and proportional stature; it is a congenital condition that can be treated during childhood with growth hormone therapy.
Molecular dating analyses allow evolutionary timescales to be estimated from genetic data, offering an unprecedented capacity for investigating the evolutionary past of all species. These methods require us to make assumptions about the relationship between genetic change and evolutionary time, often referred to as a 'molecular clock'.
Absolute Dating is a means of determining the age of ancient materials without direct comparison to the age of other, potentially associated ancient materials. Note that the term specific is not meant to imply without error` but instead of a specific quantity, such as in years. This is rather than a dating scheme that results in declarations such as that fossil A is older than fossil B, a process which instead is described as relative dating.