You have 3 populations inhabiting the same landmass. Individuals from the first and second populations cannot mate with each other. Individuals from the first and third population cannot mate with each other either. Individuals from second and third populations can mate with each other but produce sterile offspring . How many species do the three populations together represent based on biological species concept?

this was wrong help

the choices are homogenization and speciation for all three

All of the following evolutionary mechanisms have the potential to result in divergence between two allopatric populations, except:  - sexual selection - Migration - Natural selection - All of the provided mechanisms can result in divergence. - Nonrandom mating

Which part of these statements isn't right ?       A species is a group of organisms that can potentially interbreed with one another to produce viable, fertile offspring. Speciation is when two new species form from one original one. Sympatric speciation occurs when there is a geographic separation of a population. Allopatric speciation occurs while the population remains in the same area. Adaptive radiation occurs when one species evolves into many to fill several different niches. Natural selection requires traits to be passed from parent to offspring, more offspring are produced than can survive creating competition, and inherited traits vary among offspring. Fossils, Anatomy and embryology, biogeography, and molecular biology all provide support for the theory of evolution. Evolution can be driven by many different things. Mutations are changes in DNA that create new alleles in a population. Gene flow is the flow of alleles in and out of a population resulting from the migration…

The following table provides phenotypic data for a population of mammoths living in cold environments based on fossil and DNA evidence. Based on this data and your knowledge of natural selection, which explanation best explains the trends seen in the data? Individuals with thicker fur had a survival advantage in the cold environment, allowing these individuals to reproduce more often and create more offspring.   Individuals within this population of mammoths tend to only mate with individuals that have thick fur.   This population of mammoths appear to be in Hardy-Weinberg equilibrium since no allele frequencies are changing over time.   Individuals with thick fur migrated into the population of mammoths, increasing the proportion of these individuals.

You have sequenced the Rag1 gene in two populations of snails that vary in the amount of parasites. The Rag1 gene codes for proteins that affect the immune system. The results were analyzed looking for synonymous and nonsynonymous substitutions and are in the table below. Determine if the populations are under selection and comment on which population has the higher infection of parasites.     Population 1 Population 2 Synonymous 5 6 Nonsynonymous 4 13

Could you please answer part 3 and 4

Say you found another isolated pond about a mile from your first pond.  This second isolated pond contains a population of 50,000 Danio kerri. You take a female fish from pond #1 and a male fish from pond #2.  They look the same; they mate and produce fertile offspring.  This suggests that these fish are members of  _______ based on the ______. Group of answer choices the same species; biological species concept AND morphological species concept the same species; biological species concept (only) different species; morphological species concept AND biological species concept the same species; morphological species concept (only) different species; morphological species concept (only)