Explain how a horse breeder might use selective breeding......?
You mean a Palomino? I suggest you actually open your Science text books and read about genetics yourself. Maybe you'll learn something.
What is a good at-home selective breeding experiment?
Wanting something that "have a short time until I could pollinate and make a new generation" really limits your options. I'm assuming that you're looking for a project where you could grow the plants, cross them, and germinate the seeds all within a couple of months. It'll be easier if you choose something that's a leaf or stem characteristic, that way you don't have to wait for the seedlings to develop enough to produce flowers (which would take longer). If you're really concerned about time, Carolina Biological has Wisconsin Fast Plants, which are a type of mustard that will grow from seed, flower (so you can cross them) and produce seeds of their own in 5-6 weeks. So if you start from seeds, you'll probably need closer to 7-8 weeks for the second generation of plants to grow to determine the characteristics, then leave enough time to write your report. That's about as short of a life cycle as you're going to find. They have with several different characteristics http://www.carolina.com/living-organisms... If that's not fast enough, they also sell F1 and F2 generation seeds (they've done the crosses, all you have to do is grow the seeds and determine phenotype/genotype/type of inheritance) - see the link for the main web page below if interested in this Most other plants, even if you buy them already established and in full bloom (houseplants) it'll still take you a while to find ones of the same type with different characteristics, plant their seeds after they've been crossed, and wait for them to grow. And most differences you're likely to find will be in regard to flower color, which it may take several months to get a plant to flower if you grow it from seed. And not many places have seeds out for sale during December, most wait till March to put out their seeds for flowers/gardens as it's too cold at this time of year in much of the country.
Use the following terms in the same sentence: selective breeding and natural selection.?
The mad eugenics scientist used selective breeding animals for his natural selection experiment.
What would be a fun breeding experiment for a class, over a year?
Chickens! They are easy to breed and care for and can teach a lot about genes and mating. If you decide to use them I suggest a docile breed like orpingtons or cochins. The only problem with Cochins is that sometimes it is hard to have them mate. However, they have some of the best colors to teach genetics and are so sweet. Try using a blue, black and/or splash color. They have some great and easy stats for determine color using things like punnet squares.Blue x Blue = 50% Blue 25% Black 25% SplashedBlue x Black = 50% Blue 50% BlackBlue x Splashed = 50% Blue 50% SplashedBlack x Splashed = 100% BlueBlack x Black = 100% BlackSplashed x Splashed = 100% Splashed
What method did Mendel develop to run his experiments?
He selectively cross pollinated the pure lines of pea plant of seven characteristics. (Color, height, pod color, seed shape etc etc)
If we continue to selectively breed dogs and cats based on desirable traits like intelligence, will we eventually see the emergence of a new civilized species thousands of years from now?
In my extremely unscientific opinion, I’ve thought that about dogs for quite a while.By having them in our homes and beds, providing balanced nutrition and good medical care, we have removed the survival imperatives that non-domesticated species face. It parallels mankind’s evolutionary periods where climate, game, agriculture and natural events provided an optimal environment for centuries in which we had only to sit around twiddling our frontal cortices.In addition, many people work intensely with dogs, teaching them to recognize patterns of increasing complexity more and more quickly. That is one basis of increased intelligence. Without our advanced language and ability to leave records, dogs are at a disadvantage but I believe in the concept of race memory (instinct?), which over thousands of years may bring dogs forward evolutionarily. I may have made up that last word.On my out-therest days, I even wonder if dogs are a challenge posed to us by the God of my understanding. Only by learning to love one another will we someday overcome oppression of all people. Could another spiritual enlightenment involve learning our stewardship of animals does not involve killing them? But at that point I always become uncomfortable wondering if my higher power really wants me to become vegetarian or vegan. I have to marvel at my opposable thumbs and think of other things so I don’t get in a moral tizzy.It’s fun to think about isn’t it?
Why is it important for scientist to repeat an experiment several times?
A scientist knows that his or her colleagues will repeat the experiment. So it is wise to make sure he or she has not misinterpreted the results. However, I should point out that it is sometimes very difficult to repeat an experiment. For example, a scientist might do an experiment that depends on the observation of stars during a total solar eclipse ... and since such conditions are rare, the best the scientist can do is to be *very* careful, and publish his or her results as best can be documented. Come the next solar eclipse, some scientist somewhere is going to repeat the experiment and either verify or challenge the results. Or in the case of biology, a scientist could do an experiment involving selective breeding of mice that takes many years to perform ... it would be very difficult to repeat that experiment ... but the scientist has to be prepared for some other scientists to repeat the experiment again someday.
Humans have selectively bred many radically different domestic animals, Does this activity result in evolution?
Yes, absolutely. The word 'evolution' in Biology is defined as "The change in the heritable traits of a population over successive generations." So if selective breeding results in change in the heritable traits of the population, then it is evolution. Period. If breeding the fastest racehorses produces faster raceshorses, then you have changed the heritable traits of the population of racehorses. That is evolution. Period. If breeding the dairy goats with the biggest udders to bucks who daughters had the biggest udders, and this produces bigger udders, then this is evolution. Period. If you breed the rabbits with floppiest ears, and this produces floppier ears, then this is evolution. Period. There is NO requirement that this has to happen in nature to be called 'evolution'. There is NO requirement that there has to be a change between species to be called 'evolution.' If the population is changing, that is evolution. By definition.
Why don't we selectively breed wild aggressive animals until we get tame breeds of them?
We have been busy for several thousand years rearing various animals in captivity. We can assume, I think, that we have adopted the easiest ones already. We could attempt, over another few hundred years, to do the same with less adaptable animals, but there are reasons why this attempt might not repay the effort needed.The big cats, for instance: I too like the idea of having a jaguar sized cat as a pet. Sleeping by the fire, purring as loud as a railroad train, covered with splashes of stripes or rosettes......with the spare bedroom entirely given over to her catbox, a freezer entirely devoted to her food, and no room in bed for humans once she gets up there. Even if you could assure her harmlessness, a thirty kilogram cat is a challenge to any homeowner. 10-15 kg seems to be the upper limit of feasible size for a cat shaped household pet.I have never heard of any domesticated bear species. This is odd -- they are not all very large, they will mostly eat anything you offer, many species breed readily in captivity. But they are solitary animals for the most part, and even the small ones are bigger than house cats.Now otters! otters look to be wonderful pets! Playful, sociable, somewhat omnivorous, more so than cats anyway. There are some smaller species. Could longterm breeding programs produce pet otters? Maybe. For all those homes with their own waterslides installed. Maybe they could share with the raccoons. And the crocodiles.But all this daydreaming sidesteps the real problem. Keeping animals in captivity to ensure their survival ignores the fact that we are the ones threatening their survival -- not due to being afraid of their aggression, but because we barge in, cut down their forests, plow up their prairies, fill their oceans with toxins and trash, and eliminate the land and plants they need to survive. It's like burning down a village and then offering to raise the orphans. And not just raise them, but transform them in captivity to creatures which could no longer live in the wild even if there was a wild for them to live in.Zoos and preserves are necessary, don't misunderstand me. But mostly they're necessary because of us.