Tag: genetics terminology

A gamete may carry either the dominant or the recessive factor but not both as we find in F₁ individuals. This is why it is called either as 'principle of segregation' or as 'law of purity of gametes'. This concept of segregation is often called Mendel's first principle. The alleles of contrasting characters selected in the monohybrid cross will show exact Dominance and Recessive relationships. Monohybrid cross refers to  mating between two organisms with different variations at one genetic chromosome of interest. The character(s) being studied in a monohybrid cross are governed by two or multiple variations for a single locus.

A gene is a locus (or region) of DNA which is made up of nucleotides and is the molecular unit of heredity. It controls the development and function of all organs and all working systems in the body. Genes are passed from parent to offspring; the combination of these genes affects all aspects of the human body, from eye and hair colour to how well the liver can process toxins. 

Genes are the segment of DNA which carries information from parents to offsprings. It is the basic unit of heredity as they code for proteins which in turn determine the genetic traits. Genes are a continuous stretch of DNA and are linearly arranged on chromosomes. Chromatids are two identical parts of a duplicated chromosome. Nucleotides serve as a monomer of DNA. Codon is a base triplet of the gene that specifies specific amino acid. The correct answer is A.

Gregor Mendel is the father of genetics. When he explained about heredity for the first time ever, the term "Gene" which is now being used, was not given. After his demise only, most of his research studies came to lime light. According to his explanations, he called them as 'Factor' or determiner which was otherwise known as heredity units.

Genes are the functional hereditary units.  Gene is also defined as the functional unit of DNA which codes for a character. Genes are located on chromosomes, which are then carried to the next generation and thus plays a great role in heredity.

A gene is a sequence of nucleotides along a DNA strand - with 'start' and 'stop' codons and other regulatory elements - that specifies a sequence of amino acids that are linked together to form a protein.

• Genes are basic unit of heredity present on the chromosome.
  
• They are made up of DNA hence they are sequence of nucleotides.
  
• These orders of nucleotides in DNA later determine the sequence of polypeptide chain formed from them during translation. 
• So, the correct option is 'All of the above'.

In biology, a gene is a sequence of DNA or RNA that codes for a molecule that has a function. During gene expression, the DNA is first copied into RNA. The RNA can be directly functional or be the intermediate template for a protein that performs a function. However the inverse is incorrect. 

Gene is present in the coding region of the DNA. In eukaryotes, gene is made up of both introns and exons. So, the correct option is "Coding DNA".