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Definition Of Homozygous In Biology

Referencing Styles : APA | Pages : 1

Homozygous can be referred to as a single trait that has identical alleles. An allele is a particular layout of gene. The existence of Alleles can be in bipartite organisms or creatures that have two copies of chromosomes. During the process of sexual reproduction the alleles are inherited from the parents. Fertilization causes alleles to unite randomly as paired homologous chromosomes. An example of the same can be given as a human cell that has 23 chromosome pairs. One of the chromosomes are donated by the father and the other from the mother. The alleles actually determine the characteristics of the various organisms.

It can be said that homozygous is an important aspect of genetics. It helps in the effective study of genetics and understanding the behaviors of the genes and chromosomes. The homozygous alleles can either be dominant or recessive. There are two dominant combinations in the homozygous dominant allele that express the phenotype that is dominant. A recessive homozygous combination of allele has two alleles that are recessive and expresses the phenotype that is recessive. An example can be given of the gene of the Pea plant. In the Pea plant there are two types of genes that are evident. There is an allele that pertains to the round seed shape. This can be represented by the letter ‘R’. The other part is the seed shape that is wrinkled. This is represented through the ‘r’ letter.

If a homozygous plant is considered then it can either have the alleles of ‘RR’ or “rr” In case of RR, the homozygous can be said to be dominant. In the case of ‘rr’ the homozygous can be said to be recessive. The homozygous means that the traits that are the most important would be present within a given plant or organism.

There are some essential differences between the homozygous and heterozygous. If the allele is matching, the person can be said to be homozygous. If the allele tend to be different then the person can be said to be heterozygous in nature. The individual is said to be heterozygous if he or she has different alleles at the locus. A homozygous individual is a person that has two identical alleles at his/her locus. In case of the homozygous genes the individual is would remain true to the trait. Meaning that the trait is breeding true. In case of the heterozygous dissimilar individuals are present. Thus they are not pure in accordance of their genetic trends.

In terms of carrying capacity, the homozygous carries the alleles that are carrying the similar traits. On the other hand heterozygous genes carry alleles that are dissimilar. In regards to the type of alleles it can be said that homozygous individuals can carry alleles that are either dominant or recessive. However, they cannot carry both at the same time. The heterozygous can carry both. Thus, dominant and recessive allele can both be carried by a heterozygous. The gametes that are produced are of only one type when it comes to the homozygous. On the other hand the gametes of heterozygous are two types. Both the terms homozygous and heterozygous are very important in the study of genetics. These help in the identification of the various traits that can arise within the different organisms. The various traits help to understand the effectiveness of the genes towards determining the prospects of the individual. Determination of

Heterozygous means different and it consists of alleles present of both types in a chromosomes. The word ‘Homo’ means different and zygous is the term that is used for having specific kinds of zygotes. Thus, it can be said that when there are specific types of zygotes in a given genes tend to be different it can be said to be heterozygous. Both the alleles that are present on a chromosome that is homologous for a gene given that is different. In diploid organisms often two genes are carried that can be different. In this cases it can be said that heterozygous. Two types of gametes are produced by the heterozygous chromosomes. At the same time alleles that are carried in the heterozygous tend to be dissimilar. An example of heterozygous genes can be provided in this case. If there are two heterozygous parents that carry certain weakness or hereditary sickness within them, then around 25% of their children can have normal traits while the other 25% of their children can have mutant genes.

Heterozygous, tend to be organisms which that at its gene locus has alleles of two different kinds. These alleles can be of two different types. Mostly one of the alleles can be wild type and the other of the alleles can be of the mutant type. A good example can be given in this case of the Pea plant. Heterozygous Pea Plants tend to be red-white. In the question of trait the heterozygous genes are determined through dominance that is simple. This means that there would remain a dominant trait throughout the organism. In case of the heterozygous the dominant traits are represented in capital letters and the recessive or mutant allele is represented by the small letter.


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