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Understanding the Principles of Variation and Inheritance with Biology Homework Help

Inheritance is a physical hereditary. The transfer of characters from the parents to their offspring is called hereditary. This is present in the form of genes on the chromosomes. The combination of these genes expresses characters which may similar to your parents. To understand this concept better, myhomeworkhelp.com will guide you with all the definition and principles with variation and inheritance homework help.

Inheritance, in simple words, can be explained as the features that are passed down through generations. Variation, on the other hand, is the difference between cells, organisms, individual or group of organisms of any species caused by genetic differences or the environment.

Definition of variation and inheritance

Variation and inheritance homework help will help you understand the term better with proper definitions.


Variation in biology means any difference between the cells, individuals, organisms or group of organisms that are caused either by genetic differences or by the effect of the environmental changes. These variations are seen in the physical appearance, fertility, metabolism, behaviour, mode of reproduction, learning and other mental abilities, behaviour and other obvious characters.


This is a physical hereditary where the features of that are passed down from the parents to their offspring. These traits include physical characteristics that include unique genetic codes and cellular structures. Organisms that reproduce sexually, traits from both the parents are passed to their unborn babies.

Variation and inheritance are not the same and this is explained precisely by variation and inheritance homework help.

Types of variations an inheritance

Variation and inheritance assignment help will guide you understand the different types of variations and inheritance.

Types of variations –

  • Somatogenic – They are non-inheritable and somatic. They are caused by the influence of the environment on the somatic cells
  • Blastogenic –These changes occur in the genes of the organism. They can either be heritable or non-heritable. Change in a number of chromosomes leads to down syndrome
  • Continuous variations –These are minute and not hereditary. This can be due to the influence of the environment or genetic. For example, variation of heights in humans and number of arms in a starfish
  • Discontinuous variations – These variations are large and prominent and are caused due to mutations

Types of inheritance –

  • Dominant-recessive – In this case the dominant trait is inherited by the offspring
  • Incomplete dominance – This occurs when neither of the alleles has dominance over the other allele. The offspring, in this case, will be a heterozygous
  • Co-dominant – Here both the alleles are equally expressed and dominant
  • Sex-limited – These cannot be identified with phenotype and here not all the qualities are passed on to the offspring
  • Sex-linked – The X chromosome acts as the allele here and are highly dependent

Variation and inheritance assignment help include all the important points required for you to understand the two terms clearly without any doubts. This does not only increase your knowledge of the two terms but also goes in depth on how it works.

Variation and inheritance assignment help guides students with this subject and also makes it easier for them to complete their assignments in a short period of time.

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