Genetics and Evolution

Mutations of genetic codes

The order of nucleotides in deoxyribonucleic acid and ribonucleic acid determines the amino acid order of proteins. Despite the fact that the linear sequence of nucleotides in DNA provides the information for protein sequences, some mutations can have a significant impact on amino acid coding, which can in turn affect what proteins are produced, which […]

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Biology, Class 12, Genetics and Evolution, Molecular basis of inheritance: DNA, RNA, replication, transcription, NEET

Mutations

Mutations are changes in the structure of our DNA base pairs produced by a variety of external factors including UV light or errors during DNA replication. Somatic mutations occur in body cells and are not transmitted on, but germline mutations occur in eggs and sperm and is not handed down to offspring. Mutations Mutations are necessary

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Biology, Class 12, Genetics and Evolution, Molecular basis of inheritance: DNA, RNA, replication, transcription, NEET

Mutation Bias

The mutation is a skewed stochastic process in which certain mutations are more common than others. Synthetic genotype-phenotype landscapes have been employed in the past to investigate how mutation bias influences adaptive evolution. To investigate the impact of mutation bias on the adaptive evolution of higher binding affinity, we looked at 746 empirical genotype-phenotype landscapes,

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Biology, Class 12, Genetics and Evolution, Molecular basis of inheritance: DNA, RNA, replication, transcription, NEET

Mutagens

Mutagen is a term used to describe any agent that causes mutation. There are several types of mutagens, including physical mutagens, chemical mutagens, and biological mutagens. In the scientific community, this term refers to an agent’s power or potential to cause changes in the base pairs of DNA (mutation). DNA is the genetic material that

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Biology, Class 12, Genetics and Evolution, Molecular basis of inheritance: DNA, RNA, replication, transcription, NEET

Genes

Genes are found in all living things. They can be found all over the body. Genes are a set of instructions which govern how an organism looks, how it survives, and how it interacts with its surroundings. Deoxyribonucleic acid, or DNA, is the material that makes up genes. They tell a living being how to

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Biology, Class 12, Genetics and Evolution, Molecular basis of inheritance: DNA, RNA, replication, transcription, NEET

DNA negatively charged

The existence of genetic material such as DNA or RNA in every organism results in certain parallels in their personalities with their parents. This assists in the transfer of qualities from one generation to the next. Because of the presence of phosphate groups in nucleotides, DNA has a negatively charged charge. The phosphate backbone of

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Biology, Class 12, Genetics and Evolution, Molecular basis of inheritance: DNA, RNA, replication, transcription, NEET

Characteristics of Genetic Code

The amino acid order of proteins is decided by the order of nucleotides in deoxyribonucleic acid and ribonucleic acid. Proteins are not generated directly from DNA, despite the fact that the linear sequence of nucleotides in DNA provides the information for protein sequences. There are two forms of genetic coding. RNA codons or DNA codons

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Biology, Class 12, Genetics and Evolution, Molecular basis of inheritance: DNA, RNA, replication, transcription, NEET

Asthma: Classification

Asthma is a long-term non-communicable disease where the airways that transport air to the lungs swell up and reduce the width of the air passage. Asthma is also known as bronchial asthma, which indicates swelling of the bronchioles. Various factors can cause asthma, but the most common is Genetic inheritance. Asthma is a chronic non-communicable

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Biology, Class 12, Genetics and Evolution, Molecular basis of inheritance: DNA, RNA, replication, transcription, NEET

Allele

Definition of an allele A gene’s allele is a particular variant. Bacteria have only one allele per gene per organism due to their single ring of DNA. Each parent supplies an allele to each gene in sexually reproducing organisms, giving the offspring two alleles per gene. Different alleles are found in the same locations on

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Biology, Class 12, Genetics and Evolution, Molecular basis of inheritance: DNA, RNA, replication, transcription, NEET

Y Linked Inheritance

Y linked inheritance is known as the inheritance of genes on the Y chromosome. As only males mainly have a Y chromosome, Y-linked genes can only be transmitted from father to son. Y-linked inheritance is also known as the holandric inheritance. Humans and other different mammalian males have the sex chromosomes such as the X

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Biology, Chromosomal theory of inheritance, linkage, sex determination, Class 12, Genetics and Evolution, NEET