can some on help me anwer this question?

Question

Reproduction and the passing of traits of the parent to the child are two of the most basic, and most awe-inspiring, facts of life. Not only are physical and chemical characteristics passed along, but behavioral and survival techniques also come encoded in the genetic heritage of the offspring. How much of what you are comes from the genes given you by your parents? How does your behavior affect what you will pass along to your children? How much of what you are will be given to your children? Since so much of life comes packaged in the genes, where did so much diversity in living organisms come from? Why can one individual in a species be so different from another, and why can one species be so different from another? Does diversity come only from mistakes in inheritance, or is there a mechanism for creating diverse forms of life?

Answer 1

There's nothing like keeping a question simple is there

Answer 2

Evolution. An organism with a variation which is favourable will survive and pass it on to its offspring. This variation becomes more common within the species and so the species changes. It becomes part of the genes of that species.

If a species is somehow split say, onto two continents the environments will be different. Perhaps one continent will become warmer, more arid and the other will become colder. Each colony of the same species will adapt to fit their environment, but they will adapt in different ways so as to fit their new environment. They might begin with small changes in size and shape but over time the changes will become more pronounced and will result in two different species. This is called divergent evolution and is the reason there is such a wide variation of life.

There are variations within a species because the entire fertilisation process is by chance. There are billions of different ways parents can split their chromosomes to make gamates (sex cells) because in the middle of meiosis (which makes the gamates) there is a process called crossing over where chromosomes can exchange portions. This results in even more variation and stops offspring having the same chomosomes as their parents. It is also random chance which gamates fuse (sperm and egg).

Answer 3

There is definitely a mechanism for increasing diversity: crossing-over and independent assortment during meiosis, and the random pairing of gametes during sexual reproduction. Crossing-over recombines the genes that are linked on the same chromosome. Independent assortment makes gametes or reproductive cells that have different combinations of chromosomes.

People have innate behaviors, just as other animals do. Of course, much of our behavior is molded by our experiences, but we have inborn, inherited behaviors. One example is our response to babies of all species. Every time my students see a picture of a baby animal, I always hear, "Aaawww." We think baby animals are cute. We want to hold them and pet them. Even tiny turtles or little praying mantids evoke this response. This is a behavior that causes us to nurture and care for our own babies.

Why is a baby's cry so irritating and unsettling? It's so awful to listen to a baby's cry that we'll try and try to find out what the problem is in order to make the crying stop. Babies don't learn that. It comes with them as part of the baby package.