Indicate whether each of the statements below is True or False (Enter 1 for True
ID: 185671 • Letter: I
Question
Indicate whether each of the statements below is True or False (Enter 1 for True and 2 for False) The net effect of the gene flow process is to cause the two populations to becomee ess similar to each other as their gene pools mix. There are many kinds of barriers that can block gene flow and therefore contribute to the origin of new species. 1. True More species exist now than have existed in the past. 2. False Gene flow is the movement of genes from one population to another. Ecological specializations such as eating different foods can cause a population to split and cease sharing genes.Explanation / Answer
Answer:
The net effect of the gene flow process is to cause the two populations to become less similar to each other as their gene pools mix ------ False
In population genetics, gene flow is the transfer of genetic variation from one population to another. If the rate of gene flow is high enough, then two populations are considered to have equivalent geneticdiversity and therefore effectively a single population
There are many kinds of barriers that can block gene flow and therefore contribute to the origin of new species ------True
Barriers to gene flow need not always be physical. Sympatric speciation happens when new species from the same ancestral species arise along the same range. This is often a result of a reproductive barrier.
More species exist now than have existed in the past ----- False
The moment of extinction is generally considered to be the death of the last individual of the species.Scientists have estimated that over the course of Earth's history, anywhere between 1 and 4 billion species have existed on this planet.
Gene flow is the movement of genes from one population to another ------ True
Gene flow tends to reduce the differences between populations because members of each population can interbreed and genes are essentially shared or transferred between the two populations.
Ecological specializations such as eating different foods can cause a population to split and cease sharing genes ------ True