Some questions...
- Do you agree that if you have a group of animals - say a herd of zebra - then each individual will be slightly different to the others?
- Do you agree that some of those differences can make it easier for that individual to survive - say, better eyesight so it has a better chance of spotting an approaching predator?
- Do you agree that these differences are due to the genes that the animals have?
- Do you agree that the genes that are responsible for these differences can be passed on to the offspring when that animal reproduces?
- Do you agree that if an animal has some genes that mean it has a difference that helps it survive, this animal is more likely to have more offspring precisely because these differences help it live longer (living longer means more chances to reproduce)?
- Do you agree that if animals with these helpful differences produce more offspring, then the number of animals in the herd that have this helpful difference will tend to increase over the generations?
- Do you agree that if we wait for enough generations to pass, most if not all animals in the herd will have this difference, and what was once different is now normal?
If you think it's wrong, can you tell me which one exactly do you think is incorrect?
2. Hardly. In a herd it would be mostly chance. Its far more likely genetic mutations would be disadvantage and help it get eaten.
3. Have to disagree. Not all changes are due to genetics. Some are morphological. More pronounced in humans. They had a better diet and grew taller. Something even Darwin knew, modern diet in humans makes human jaws smaller and teeth crowded up, because you don't have to chew as much, which causes problems with wisdom teeth coming in. Just learned a few days ago, it causes respiratory problems, because we're designed to eat soft food.
4. As I said no above, no, only mutations are passed on to next generation. But another level of design inherent in the system is epigenetics. And this is new science, apparently genetics passed on to next generation can be altered by environment by master control genes...this occurs in environment females when born, due to eggs starting as far as their component of genome, but males its the environment they gestate the eggs.
5. No I dont agree. You are stating hypthetical gene that is beneficial, vs other mutated genes which mutated genes are general bad. It's why you don't have sex with cousins now. You are promoting bad mutations hidden by dominent good genes.
6. The most beneficial mutation to date, is sickle cell anemia...yeah prevents you from getting malaria, with 20% death rate and gives you 25% death rate and 50% weakened.
7. Wishful thinking. We see in reality, a reduction of healthy generations. You need only look at what once a proof for evolution, artifical selection. Its a fact the more a dog is bred, the less healthy it is. Hip dysplesia is most common disease. Some dog breeds can only give birth by C section, can barely breath. The healthy dog is a mutt. YES OR NO>