Table of Contents
- 1 What does it mean for two species to be reproductively isolated from each other?
- 2 What evidence did scientists use to determine that all the species of finches on the Galapagos have one common ancestor?
- 3 Why do you think these organisms belong to the same species and yet they look different from each other?
- 4 What is it called when better adapted organisms survive to pass traits along to their offspring?
- 5 How do scientists determine how closely two organisms are related?
- 6 How closely related are chimps and humans?
What does it mean for two species to be reproductively isolated from each other?
What does it mean for two species to be reproductively isolated from each other? Members of the two species cannot interbreed and produce fertile offspring.
Which two conditions are required for the process of speciation the production of two separate species from one initial species?
For speciation to occur, two new populations must be formed from one original population, and they must evolve in such a way that it becomes impossible for individuals from the two new populations to interbreed.
Why does a biological species have to be reproductively isolated from other organisms?
why does a biological species have to be reproductively isolated from other organisms? reproductive isolation is necessary for lineages to remain distinct through evolutionary time and is responsible for the morphological distinctiveness of species. the evolution of a new, reproductively isolated, population.
What evidence did scientists use to determine that all the species of finches on the Galapagos have one common ancestor?
Differences in beak shapes tell us that all the finches eat the same type of food. Different finch beak shapes are evidence that all Galápagos finches shared a common ancestor a long time ago. Different finch beak shapes are evidence that over time, finch species adapted to different food sources on the islands.
What determines whether the two organisms of a species will be exactly similar or not?
Answer: DNA played the major role in determining the similarity then comes the environmental factor that impacts on the behavior of organism.
What is the name given to the scenario where two or more populations have been reproductively isolated to produce two or more separate species?
Allopatric speciation (1) occurs when a species separates into two separate groups which are isolated from one another.
Why do you think these organisms belong to the same species and yet they look different from each other?
Genetic variation within a species can result from a few different sources. Mutations, the changes in the sequences of genes in DNA, are one source of genetic variation. Another source is gene flow, or the movement of genes between different groups of organisms.
When individuals of the same species are reproductively isolated genetic differences may accumulate?
When individuals of the same species are reproductively isolated, genetic differences may accumulate in sufficient number so that new species could, emerge. Such an event would be an example of: macroevolution.
Which condition is the basis for a species to be reproductively isolated from other members?
Which condition is the basis for a species to be reproductively isolated from other members? It does not share its habitat with related species. It does not exist out of a single habitat.
What is it called when better adapted organisms survive to pass traits along to their offspring?
Natural selection is a mechanism of evolution. Organisms that are more adapted to their environment are more likely to survive and pass on the genes that aided their success. This process causes species to change and diverge over time.
Which observations led Darwin to establish a relationship between extinct and living animals select all that apply?
Which observations led Darwin to establish a relationship between extinct and living animals? The bony shells of armadillos resembled the shells of ancient Glyptodon fossils. The fossilized remains of giant sloths were found in places where smaller sloths now live.
What is the relationship between cell division and formation of new organisms of same species?
Cell division is the manipulation of the initial cell , and formation of new daughter cell. While, formation of new species of same organisms is called as reproduction . In unicellular organisms like amoeba…. cell division itself leads to the formation of the new species.
Similarities are often easy to see when one looks at two organisms that evolved from a common ancestor, and until recently, looking at physical features and behavior was the only way to determine how closely related two organisms are. However, now scientists can also analyze DNA to discover how closely organisms are related.
Do turtles and tortoises have a common ancestor?
Turtles and tortoises share a common ancestor, but began evolving separately a long time ago. The common ancestor of box and painted turtles lived more recently, so the box turtle has more in common with the painted turtle than it does with the tortoise.
What is a group of organisms of the same species called?
A POPULATION is a group of organisms of same species. A community is a group of 2+ species that all have specified roles in their specific area. An ecosystem is made up of several species and their surroundings. [e.g. plants, land, etc.]
Family snapshot – chimps and humans are very closely related. Similarities are often easy to see when one looks at two organisms that evolved from a common ancestor, and until recently, looking at physical features and behavior was the only way to determine how closely related two organisms are.