Tag: Biology

Pollination and its Types

Post author By Hemant More
Post date April 6, 2020
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Science > Biology > Botany > Reproduction in Plants > Pollination and its Types In this article, we are going to study important step in sexual reproduction in plants i.e. pollination. We shall also study its types. Transfer of pollen grains (shed from the anther) to the stigma of a pistil is termed pollination. Depending […]

Tags Abiotic agents of pollination, Androecium, Anemophily, Apomixis, Asexual reproduction in plants, Biology, Biotic agents of pollination, Botany, Cellular endosperm, Ceratophyllum desnersum, Chiropterophily, Cross-pollination, Development of embryo, Development of endosperm, Development of Female Gamete, Development of Male gametophyte, Double fertilization, Endosperm, Entomophily, Epihydrophily, Fertilization, Formation of fruit, Formation of seed, Gynoecium, Helobial Endosperm, Hydrophilly, Hypohydrophily, Microsporangium, Nuclear endosperm, Ornithophily, Parthenocarpy, Pollen-Pistil Interaction, Pollination, Polyembyyony, Self-pollination, Sexual reproduction in moss, Sexual reproduction in plants, Sexual reproduction in spirogyra, Stigma, Structure of anther, Structure of ovule, Structure of pollen grain, Structure of seed, Zostera marina

Botany

Androecium and Gynoecium

Science > Biology > Botany > Reproduction in Plants > Androecium and Gynoecium The flower is the reproductive unit in the angiosperms. It is meant for sexual reproduction. A typical flower has four different kinds of whorls arranged successively on the stalk or pedicel, called thalamus or receptacle. These whorls are calyx, corolla, androecium and […]

Tags Abiotic agents of pollination, Androecium, Anemophily, Apomixis, Asexual reproduction in plants, Biology, Biotic agents of pollination, Botany, Cellular endosperm, Ceratophyllum desnersum, Chiropterophily, Cross-pollination, Development of embryo, Development of endosperm, Development of Female Gamete, Development of Male gametophyte, Double fertilization, Endosperm, Entomophily, Epihydrophily, Fertilization, Formation of fruit, Formation of seed, Gynoecium, Helobial Endosperm, Hydrophilly, Hypohydrophily, Microsporangium, Nuclear endosperm, Ornithophily, Parthenocarpy, Pollen-Pistil Interaction, Pollination, Polyembyyony, Self-pollination, Sexual reproduction in moss, Sexual reproduction in plants, Sexual reproduction in spirogyra, Stigma, Structure of anther, Structure of ovule, Structure of pollen grain, Structure of seed, Zostera marina

Botany

Sexual Reproduction in Plants

Post author By Hemant More
Post date April 5, 2020
2 Comments on Sexual Reproduction in Plants

Science > Biology > Botany > Reproduction in Plants > Sexual Reproduction in Plants Sexual reproduction is also called amphimixis (Gk. amphi – both, mixis – union) or syngenesis (Gk. syn – together, genesis – origin) or amphigony (Gk. amphi – both, gony – marriage). In this article, we shall study sexual reproduction in plants. […]

Tags Abiotic agents of pollination, Androecium, Anemophily, Apomixis, Asexual reproduction in plants, Biology, Biotic agents of pollination, Botany, Cellular endosperm, Ceratophyllum desnersum, Chiropterophily, Cross-pollination, Development of embryo, Development of endosperm, Development of Female Gamete, Development of Male gametophyte, Double fertilization, Endosperm, Entomophily, Epihydrophily, Fertilization, Formation of fruit, Formation of seed, Gynoecium, Helobial Endosperm, Hydrophilly, Hypohydrophily, Microsporangium, Nuclear endosperm, Ornithophily, Parthenocarpy, Pollen-Pistil Interaction, Pollination, Polyembyyony, Self-pollination, Sexual reproduction in moss, Sexual reproduction in plants, Sexual reproduction in spirogyra, Stigma, Structure of anther, Structure of ovule, Structure of pollen grain, Structure of seed, Zostera marina

Botany

Asexual Reproduction in Plants

Post author By Hemant More
Post date April 5, 2020
No Comments on Asexual Reproduction in Plants

Science > Biology > Botany > Reproduction in Plants > Asexual Reproduction in Plants In this article, we shall study asexual reproduction in plants. Reproduction: Reproduction is defined as a biological process in which an organism gives rise to young ones (offspring) similar to itself. The offspring grow, mature and in turn produce new offspring. […]

Genetics

Nucleotides

Science > Biology > Gene its Nature, Expression and Regulation > Nucleotides In this article, we shall study structural units of nucleic acid called nucleotides. In 1869, Friedrich Miescher separated cellular substance from the nuclei of pus cell and called it ‘Nuclein’. Due to acidic nature, the substance is further called as nucleic acid. There are […]

Tags Alternate genes, Alternative genes, Avery, Biology, Biotechnology, Botany, Cistron, Collinear genes, Constitutive genes, Continuous genes, Deoxyribose, Discontinuous genes, DNA as genetic material, Exons, Frankel-Conrat and Singer Experiment, Functions of genes, Gene families, Genes, Genetic material, Genetics, Genomics, Griffith Experiment, Hershey - Chase Experiment, Housekeeping genes, Interrupted genes, Introns, Jumping genes, Luxury genes, Macleod and McCarty Experiment, Multigenes, Muton, Noncontutive genes, Nucleosides, Nucleotides, Operative genes, Operon, Overlapping genes, Phosphate group, Polynucleotides, Processed genes, Promoter genes, Pseudogenes, Purines, Pyrimidines, Recon, Regulator genes, Replicon, Ribose, RNA as genetic material, Rough Avirulent Strain (R-II), Single copy genes, Smooth Virulent Strain (S-III), Split genes, Streptococcus pneumoniae, Structural genes, Sugars, Terminator genes, Transposons, Uninterrupted genes, Zoology

Genetics

Genetic Material

Science > Biology > Gene its Nature, Expression and Regulation > Genetic Material DNA as Genetic Material Griffith Experiment: Background: Meischer isolated nuclein from nuclei of WBCs in 1869. Walter Sutton, Thomas Hunt Morgan established that the hereditary material lies in the nucleus in chromosomes. Chromosomes are formed of proteins and nucleic acid, DNA. For […]

Tags Alternate genes, Alternative genes, Avery, Biology, Biotechnology, Botany, Cistron, Collinear genes, Constitutive genes, Continuous genes, Deoxyribose, Discontinuous genes, DNA as genetic material, Exons, Frankel-Conrat and Singer Experiment, Functions of genes, Gene families, Genes, Genetic material, Genetics, Genomics, Griffith Experiment, Hershey - Chase Experiment, Housekeeping genes, Interrupted genes, Introns, Jumping genes, Luxury genes, Macleod and McCarty Experiment, Multigenes, Muton, Noncontutive genes, Nucleosides, Nucleotides, Operative genes, Operon, Overlapping genes, Phosphate group, Polynucleotides, Processed genes, Promoter genes, Pseudogenes, Purines, Pyrimidines, Recon, Regulator genes, Replicon, Ribose, RNA as genetic material, Rough Avirulent Strain (R-II), Single copy genes, Smooth Virulent Strain (S-III), Split genes, Streptococcus pneumoniae, Structural genes, Sugars, Terminator genes, Transposons, Uninterrupted genes, Zoology

Genetics

Types of Genes

Science > Biology > Gene its Nature, Expression and Regulation > Types of Genes In the last article, we have studied the meaning of the term gene. In this article, we shall study types of genes. Based on the function and activity, the genes are classified as follows. Housekeeping Genes or Constitutive Genes: Housekeeping genes […]

Tags Alternate genes, Alternative genes, Avery, Biology, Biotechnology, Botany, Cistron, Collinear genes, Constitutive genes, Continuous genes, Deoxyribose, Discontinuous genes, DNA as genetic material, Exons, Frankel-Conrat and Singer Experiment, Functions of genes, Gene families, Genes, Genetic material, Genetics, Genomics, Griffith Experiment, Hershey - Chase Experiment, Housekeeping genes, Interrupted genes, Introns, Jumping genes, Luxury genes, Macleod and McCarty Experiment, Multigenes, Muton, Noncontutive genes, Nucleosides, Nucleotides, Operative genes, Operon, Overlapping genes, Phosphate group, Polynucleotides, Processed genes, Promoter genes, Pseudogenes, Purines, Pyrimidines, Recon, Regulator genes, Replicon, Ribose, RNA as genetic material, Rough Avirulent Strain (R-II), Single copy genes, Smooth Virulent Strain (S-III), Split genes, Streptococcus pneumoniae, Structural genes, Sugars, Terminator genes, Transposons, Uninterrupted genes, Zoology

Genetics

Gene: The Concept, Characteristics, and Functions

Post author By Hemant More
Post date March 13, 2020
No Comments on Gene: The Concept, Characteristics, and Functions

Science > Biology > Gene its Nature, Expression and Regulation > Gene: The Concept, Characteristics, and Functions In this article, we shall the essential characters of genetic material, the meaning of the term gene, its characteristics, and its functions. Essential Features of Genetic Material: It should have the ability to store hereditary information in coded […]

Tags Alternate genes, Alternative genes, Avery, Biology, Biotechnology, Botany, Cistron, Collinear genes, Constitutive genes, Continuous genes, Deoxyribose, Discontinuous genes, DNA as genetic material, Exons, Frankel-Conrat and Singer Experiment, Functions of genes, Gene families, Genes, Genetic material, Genetics, Genomics, Griffith Experiment, Hershey - Chase Experiment, Housekeeping genes, Interrupted genes, Introns, Jumping genes, Luxury genes, Macleod and McCarty Experiment, Multigenes, Muton, Noncontutive genes, Nucleosides, Nucleotides, Operative genes, Operon, Overlapping genes, Phosphate group, Polynucleotides, Processed genes, Promoter genes, Pseudogenes, Purines, Pyrimidines, Recon, Regulator genes, Replicon, Ribose, RNA as genetic material, Rough Avirulent Strain (R-II), Single copy genes, Smooth Virulent Strain (S-III), Split genes, Streptococcus pneumoniae, Structural genes, Sugars, Terminator genes, Transposons, Uninterrupted genes, Zoology

Genetics

Polygenic Inheritance

Science > Biology > Genetic Basis of Inheritance > Polygenic Inheritance Mendel performed his experiments with garden pea plant, which has traits or alleles having complete dominance and hence the laws of inheritance were proved. Other scientists performed their experiments on different plants and animals and found deviations to Mendelian ratios. Depending upon these experiments and […]

Tags Alleles, Allelomorphs, Back cross, Biology, Biotechnology, Blending dominance, Blood groups in human beings, Botany, Character, Checker board, Clones, Codominance, Complementary genes, Complete dominance, Cross hybrid ratio, Dihybrid, Dihybrid cross, Dominant allele, Dominant trait, Emasculation, F1 Generation, F2 Generation, Factor, Gene, Gene interactions, Genetics, Genome, Genotype, Heredity, Heterologous chromosomes, Heterozygous, Homologous chromosomes, Homozygous, Human skin colour, Hybrid, Hybridization, Incomplete dominance, Inheritance, Interallelic interactions, Intergenic interactions, Intragenic interactions, Lethal genes, Marfan, Mendel, Mendel's dihybrid cross experiment, Mendel's monohybrid cross experiment, Mendel’s laws, Mendelism, Monohybrid, Monohybrid cross, Monohybrid ratio, Morphan's syndrome, Multiple alleles, Nonallelic interactions, Offspring, Partial dominance, Phenotype, Phenylketonuria, PKU, Pleiotropy, Poly-hybrid cross, Polygenic inheritance, Punnett square, Pure line, Qualitative inheritance, Quantitative inheritance, Recessive allele, Recessive trait, Reciprocal cross, Self-breeding, Sickle cell anaemia, Test cross, Theory of blending, Theory of epigenesis, Theory of Pangenesis, Theory of Preformation, Trait, Variations, Wheat kernel colour, Zoology

Genetics

Pleiotropy

Science > Biology > Genetic Basis of Inheritance > Pleiotropy Mendel performed his experiments with garden pea plant, which has traits or alleles having complete dominance and hence the laws of inheritance were proved. Other scientists performed their experiments on different plants and animals and found deviations to Mendelian ratios. Depending upon these experiments and observations, […]

Tags Alleles, Allelomorphs, Back cross, Biology, Biotechnology, Blending dominance, Blood groups in human beings, Botany, Character, Checker board, Clones, Codominance, Complementary genes, Complete dominance, Cross hybrid ratio, Dihybrid, Dihybrid cross, Dominant allele, Dominant trait, Emasculation, F1 Generation, F2 Generation, Factor, Gene, Gene interactions, Genetics, Genome, Genotype, Heredity, Heterologous chromosomes, Heterozygous, Homologous chromosomes, Homozygous, Human skin colour, Hybrid, Hybridization, Incomplete dominance, Inheritance, Interallelic interactions, Intergenic interactions, Intragenic interactions, Lethal genes, Marfan, Mendel, Mendel's dihybrid cross experiment, Mendel's monohybrid cross experiment, Mendel’s laws, Mendelism, Monohybrid, Monohybrid cross, Monohybrid ratio, Morphan's syndrome, Multiple alleles, Nonallelic interactions, Offspring, Partial dominance, Phenotype, Phenylketonuria, PKU, Pleiotropy, Poly-hybrid cross, Polygenic inheritance, Punnett square, Pure line, Qualitative inheritance, Quantitative inheritance, Recessive allele, Recessive trait, Reciprocal cross, Self-breeding, Sickle cell anaemia, Test cross, Theory of blending, Theory of epigenesis, Theory of Pangenesis, Theory of Preformation, Trait, Variations, Wheat kernel colour, Zoology