20. There are many different ways that speciation can occur. These can include reproductive isolation and geographic isolation. Write your answer on the lines. Explain how genetic variations helped anoles survive a migration from one type of environment to another. 1​

Genetic variations helped anoles survive a migration from one type of environment to another because of the way the genetics were set up/ passed down to the anoles. They also could have adapted really quick by the way there skin and body make up is.  

answer: all : )

explanation:

a tetrad is the foursome during meiosis made by two homologous chromosomes that have each already replicated into a pair of sister chromatids.