Zootoca vivipara are likely uniformly distributed within their range.
DNA is the molecule which holds the Genetic Information , it's like the blueprint for how the body will be built, you can call it the book of life.
DNA is like a book written in a 4-letters-language, each three letter (Codon) can form a word , and these words can form sentences (Genes). And like any other type of sentences they contain some words which are not necessary (Introns) and crucial words (Exons). Moreover like any book, some chapters are not that necessary (Noncoding DNA).
Bird skeletons are very delicate, and therefore, difficult to be preserved. The bones of the birds are soft. The small animals are very prone to physicochemical as well as biological decay. This is why the fossil record of bird is incomplete and well-preserved fossils of birds are rare to find, except at a few unusual sites.
Answer:
the thrid one is the best one
Heritability is a measure that is used to estimate the variation of phenotypic traits (observable traits) in a given population due to the variation or changes in the genetic make up (genotype) among certain individuals. some of these traits includes color blindness, tongue rolling and curly hair among others. However, some traits such as nearsightedness are caused or influenced by the changes in the environment and therefore Heritability is not a factor to consider when dealing with such traits.