Sexual reproduction and variation

Difference between sexual and asexual reproduction:

Difference between sexual and asexual reproduction:

Sexual reproduction involves the fusion of gametes from two different parents, resulting in offspring that have a unique combination of genetic material from each parent. Asexual reproduction, on the other hand, involves only one parent and produces offspring that are genetically identical to the parent.

What is a zygote:

A zygote is the cell that results from the fusion of two gametes during fertilization. It is the first stage of development for a new organism and contains all the genetic information needed to create a new individual.

Internal Fertilization

Internal fertilization is when the sperm travels from the male's body into the Females body to meet the egg for example: Humans

External Fertilization

External fertilization is when the sperm and the egg meet outside the bodies of both parents for example: Fish

Haploid

is having a single set of chromosomes

Diploid

having two sets of chromosomes

Gametes

Gametes are specialized cells for reproduction, for example: Sperm cells and egg cells.

Variation:

Differences in characteristics caused by genetic and environmental factors

Fertilization:

Fertilization is the process where the sperm and egg cells combine to form a zygote. During this process, the genetic material from both the sperm and the egg combine to create a unique genetic combination. The resulting zygote contains all the genetic information necessary to create a new individual.

Mating:

It is the process where organicism's combine their gametes for fertilization.

Complete Metamorphosis

Process by which an organism develops into un adult by changing from one form to another ex: Moth

Incomplete Metamorphosis:

Organisms develop into an adult through series of Stages having slightly different forms ex: Nymphs

Embryo:

An embryo is the early stage of development for a multicellular organism. It is formed after fertilization, when the zygote begins to divide and differentiate into different cell types. During embryonic development, the organism's basic body plan is established, and organs and tissues begin to form. In humans, for example, the embryonic stage lasts from fertilization until about 8 weeks (about 2 months) of development.

body cell

Body cells, also known as somatic cells, are the cells that make up the body tissues and organs. These cells are diploid, which means they contain two sets of chromosomes (one set inherited from each parent). Body cells undergo mitosis to produce two identical daughter cells, which are used for growth, repair, and maintenance of the body.

sex cell

On the other hand, sex cells, also known as gametes, are the cells responsible for sexual reproduction. In humans, sex cells are the sperm in males and the egg (or ovum) in females. Unlike body cells, sex cells are haploid, which means they contain only one set of chromosomes.

Egg

the gametes in female animals

Sperm

the gametes in male animals

Difference between mating and fertilization:

• Mating is the process by which two individuals of opposite sexes come together in order to reproduce. This process involves a series of behaviors and interactions that allow the individuals to identify and select a suitable mate.

• Fertilization, on the other hand, is the process by which the sperm and the egg fuse together to form a zygote. This occurs after mating when the sperm from the male fertilizes the egg from the female. The zygote contains all the genetic information from both parents and will develop into a new individual.