Question

Which of the following statements defines the members of a species?
A. They have identical genes

B. They are geographically isolated from each other

C. They are reproductively isolated

D. They are temporally isolated from each other

Answer 1

Which one do you think it is and why?

Answer 2

I honestly have no idea.

Answer 3

I have a link that may help with this one: http://darwiniana.org/mayrspecies.htm

Answer 4

Where in these paragraphs can I find the answer?

Answer 5

1. What is a species, and what is not? As someone who has published books and papers on the biological species for more than 50 years, and who has revised and studied in detail more than 500 species of birds and many species of other groups of organisms, the reading of some recent papers on species has been a rather troubling experience. There is only one term that fits some of these authors: armchair taxonomists. Since many authors have never personally analyzed any species populations or studied species in nature, they lack any feeling for what species actually are. Darwin already knew this when, in September 1845, he wrote to Joseph Hooker: "How painfully true is your remark that no one has hardly the right to examine the question of species who has not minutely described many." (Darwin 1987, 253). These authors make a number of mistakes that have been pointed out again and again in the recent literature. Admittedly, the relevant literature is quite scattered, and some of it is perhaps rather inaccessible to a non-taxonomist. Yet, because the species concept is an important concept in the philosophy of science, every effort should be made to clarify it. It occurred to me that instead of criticizing certain recently published papers individually, it would be more constructive and helpful if I would here attempt to present, from the perspective of a practicing systematist, a concise overview of the philosophically important aspects of the problem of the 'species'. There is nothing of the sort in the literature.

Answer 6

I'm sorry I'm really stupid I just can't find it.

Answer 7

oh my gosh never call yourself stupid! :( I'm here to help hold up

Answer 8

I know and I appreciate it but biology is just really hard and I can never find out the answers even if it's in a small or large paragrpah

Answer 9

ok try reading this
Reproductive Isolation. The Biological Species definition includes the statement that the populations of one species are "reproductively isolated" from the populations of all other species. Typologically conceived, this would mean that no individual of species A would ever hybridize with any individual of species B. Botanists soon pointed out that this did not correctly describe many situations in nature. They discovered case alter case of occasional (sometimes even rather frequent) hybridization between seemingly "good" sympatric species. Anderson (1949) went so far as to claim that this was the normal situation with closely related sympatric species and that through such "introgressive hybridization," as he called it, either species would be enriched by genes from other species. Other authors minimized the frequency of such hybridization and considered parallel variation in sympatric species as the residues of ancestral polymorphisms. Recent molecular analysis has, however, confirmed the frequency of clandestine introgression. However, if the two species continue their essential integrity, they will be treated as species, in spite of the slight inefficiency of their isolating mechanisms.

Answer 10

So it's reproductively isolated?

Answer 11

yep! good job!

Answer 12

Thanks! okay I want to post other questions but they have pictures and I don't know how to post those pictures with them

Answer 13

hit attach file and click on the file u want to put in it should work

Answer 14

How do I get the picture on the computer

Answer 15

Right click on the picture and say "Save picture as" or something like that, name the picture, and attach it here

Answer 16

can i get the picture off of google?

Answer 17

Here, do you want me to walk you through it with screenshots?

Answer 18

Is it a picture on paper or on the computer?

Answer 19

paper

Answer 20

OH, you could take a picture with your phone (if you have one) then email it to yourself, and save the picture

Answer 21

alright i think i know how to do that

Answer 22

Depending on which email you have, I might be able to give you step by step instructions if you need it?

Answer 23

sure.

Answer 24

What do you use for email? gmail?

Answer 25

@ashleytomlinson99

Answer 26

umm, what are you going to do with it. and that isn't my email

Answer 27

no shes asking do you use yahoo,aol etc

Answer 28

I was asking what server you use so that I might be able to help

Answer 29

aol

Answer 30

oh, I don't have an email on there :(

Answer 31

um is there a way u can email it to me and i might just upload it for u

Answer 32

^^^ that works too

Answer 33

it's okay i am trying to figure it out

Answer 34

if you need help just pm one of us :)