Question

How reproduction take place in living organisam?​

Answer 1

Answer:

Explanation:1. Reproduction occurs by passing on genes which are the "blueprint" for inherited traits. If an organism "survives" without passing on traits, its survival "doesn’t count" in evolution.

2. If the two parental copies of a gene differ in function, the function of one copy may mask the function of another. The copy (or "allele") whose function is expressed is said to be dominant. The masked allele is recessive. Often a recessive allele is simply a non-functional copy.

3. The frequency of all alleles in a population adds to 1 (or 100%). So, if the frequency of the Huntington's Disease allele is 0.1 (1%), then the frequency of the normal allele is 0.99 (99%). In a large population, allele frequencies remain stable, based on Hardy-Weinberg equilibrium. Natural selection however perturbs Hardy-Weinberg equilibrium, leading to changes in allele frequencies.

4. In humans, two X chromosomes makes a female; XY makes a male. The Y chromosome actually has degenerated through evolution, and now carries very few genes. Thus for males, most of the genes on the X chromosome (for example, red/green color vision) are inherited only from the mother.

5. In "real life," expression of genes is very complicated, depending on: regulation by factors of the environment; developmental stage; interaction with other genes; and chance.

6. Organisms can actually pass on their traits without producing their own offspring—if they assist reproduction of a relative who shares their genes. This is known as kin selection.

Answer 2

In living organisms, sexual reproduction takes place.

There are many events involved in reproduction :

• Gametogenesis : Formation of gametes.
• Insemination : Transfer of male sperms into female genital tract.
• Fertilisation : Fusion of male and female gamete to form zygote.
• Implantation : Attachment of blastocyst on the uterine wall.
• Gestation : Development of blastocyst into a baby.
• Parturition : Delivery of the baby.
• Lactation : Feeding colostrum by mother to the baby.