Q.4 Describe DNA Replication. Answer: Definition It is a process in which one parental DNA is divided into two genetically identical daughter DNA molecules. DNA replication takes place before cell division. Purpose It is done to make the copies of chromatids of chromosomes. Unwinding of DNA strands First step in DNA replication is unwinding of DNA: …
Q.3 Describe structure of DNA. Answer: James Watson and Francis Crick In 1953, James Watson and Francis Crick proposed structure for DNA. Double Helix According to Watson-Crick model, a DNA molecule consists of two polynucleotide strands which are coiled around each other in the form of double helix. Sugar-phosphate Backbone There is phosphate-sugar backbone on the …
Q.3 Describe structure of DNA.Q.3 Describe structure of DNA. Read More »
Q.2 What are chromosomes and genes. Describe the structure of chromosomes. Answer: Genes Genes consist of DNA. They contain specific instructions for protein synthesis. Or Units of inheritance, located on chromosomes are called genes. Chromosomes (a) Introduction Hereditary material found in the nucleus of every cell is called chromosomes. (b) Constant number Body cells have a …
Q.2 What are chromosomes and genes. Describe the structure of chromosomes. Read More »
Q.1 Define the following terms: Genetics, inheritance, traits and genes Answer: Genetics It is a branch of biology in which we study inheritance. OR The branch of biology which describes that how traits and characteristics are transferred from parents to offspring is called genetics. Inheritance It means the transmission of characteristics from parents to offspring. …
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Unit 15 Inheritance Long Questions Q.1 Define the following terms: Genetics, inheritance, traits and genes Q.2 What are chromosomes and genes. Describe the structure of chromosomes. Q.3 Describe structure of DNA. Q.4 Describe DNA Replication. Q.5 How does DNA of chromosome work? Q.6 Describe role of genes and alleles. Q.7 What is Genotype? Explain its …