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Gaurav Seth 5 years, 1 month ago
Key Points on Mendel’s Laws
- The law of inheritance was proposed by Gregor Mendel after conducting experiments on pea plants for seven years.
- The Mendel’s laws of inheritance include law of dominance, law of segregation and law of independent assortment.
- The law of segregation states that every individual possesses two alleles and only one allele is passed on to the offspring.
- The law of independent assortment states that the inheritance of one pair of genes is independent of inheritance of another pair.
Posted by Manish Gurjar 5 years, 1 month ago
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Yogita Ingle 5 years, 1 month ago
Angiosperms are vascular plants with stems, roots, and leaves. The seeds of the angiosperm are found in a flower. These make up the majority of all plants on earth. The seeds develop inside the plant organs and form fruit. Hence, they are also known as flowering plants.
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Gaurav Seth 5 years, 2 months ago
Thalassemia is an inherited blood disorder in which the body makes an abnormal form of hemoglobin. Thalassemia is an inherited (i.e., passed from parents to children through genes) blood disorder caused when the body doesn't make enough of a protein called hemoglobin, an important part of red blood cells.
Yogita Ingle 5 years, 2 months ago
Thalassemia is a hereditary condition that affects the blood which leads to an abnormal form of haemoglobin. Haemoglobin is an important protein molecule present in RBC that carries oxygen. This disorder leads to the destruction of RBC which leads to anaemia. These range from a mild illness without symptoms to a serious or life-threatening disease. The modern treatment offers a good outlook on severe causes of thalassemia, but it requires long-term care and treatment. Good treatment is important in order to prevent complications from emerging. Thalassemia is most common among people with Mediterranean or Asian family backgrounds.
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Nargis Ahmed 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
Vector: Those quantities which have magnitude, as well as direction, are called vector quantities or vectors.
Posted by Nargis Ahmed 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
A pathogen or irresistible operator is an organic specialist that makes infection or disease its host. The term is frequently utilized for specialists that disturb the ordinary physiology of a multicellular creature or plant. Be that as it may, pathogens can contaminate unicellular living beings from the majority of the organic kingdoms. There are a few substrates and pathways whereby pathogens can attack a host. The human body contains numerous regular guards against some of the basic pathogens as the human insusceptible framework and by some "accommodating" microbes present in the human body's ordinary verdure. A few pathogens have been observed to be in charge of enormous measures of losses and have effectively affected beset gatherings. Social advances, for example, nourishment security, cleanliness, and water treatment have diminished the danger from a few pathogens.
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Tushar Sikka 5 years, 2 months ago
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Meghna Thapar 5 years, 2 months ago
Batesian mimicry is a form of mimicry wherein one harmless species that is palatable to a predator, mimics the appearance of a harmful or noxious species. In mullarian mimicry, two equally noxious species evolve to look similar to each other. An example of Mullerian mimicry can be found in the poison dart frogs of South America and Madagascar. Poison frogs of the Dendrobates genus are known to secrete poison onto their skin as a means of protection. The poison is produced and derived from insects consumed in their native habitats.
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Khanjan Sanghavi 5 years, 2 months ago
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Posted by Neha Prajapati 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
- Spore formation is a method of asexual reproduction.
- Plants like ferns, moss, fungi reproduce by this method.
- Spores are unicellular reproductive bodies present in sac called sporangia.
- When spores mature sporangia burst and spores are carried to different location by air, wind, water.
- When spores fall on a suitable ground, they germinate and develop new individuals.
Posted by Kirti Singh 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
Sertoli cell is the "nurse" cell of the testes and is located in the seminiferous tubule. They are somatic cells located within the germinal epithelium. Its main function is to nourish the developing sperms, hence called as "nurse" cells.
Posted by Ansh Patel 5 years, 2 months ago
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Meghna Thapar 5 years, 2 months ago
The holoblastic type of cleavage is commonly seen in eggs containing moderate to sparse amount of yolk. Examples of animals with eggs that divide holoblastically include the amphibians, mammals, echinoderms, annelids, flatworms, nematodes, etc. Holobalstic cleavage can be: equal cleavage. It divides the zygote and blastomeres completely into daughter cells. It is of two types: equal and unequal. (i) Equal Holoblastic Cleavage: It forms equal blastomeres. It occurs in star fish.
Posted by Ansh Patel 5 years, 2 months ago
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Meghna Thapar 5 years, 2 months ago
In placental mammals (including humans) where nourishment is provided by the mother's body, the eggs have a very small amount of yolk and undergo holoblastic cleavage. Other species, such as birds, with a lot of yolk in the egg to nourish the embryo during development, undergo meroblastic cleavage. A mammalian embryo, just prior to implantation, consisting of a hollow ball of cells surrounding a smaller clump of cells known as the inner cell mass. The blastocyst is the source material to derive embryonic stem (ES), trophoblast stem (TS), and extraembryonic endoderm (XEN) cell lines.
Posted by Parul Bhardwaj 5 years, 2 months ago
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Meghna Thapar 5 years, 2 months ago
A complementary strand of DNA or RNA may be constructed based on nucleobase complementarity. Each base pair, A=T vs. ... Hydrogen bonding between the nucleobases also stabilizes the DNA double helix. Complementarity of DNA strands in a double helix make it possible to use one strand as a template to construct the other. Because of the nature of complementary base pairing, if you know the sequence of one strand of DNA, you can predict the sequence of the strand that will pair with, or "complement" it. Remember, when writing complementary DNA sequences, you need to write the sequence in the 5' to 3' direction.
Posted by Supriya Chaubey 5 years, 2 months ago
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Meghna Thapar 5 years, 2 months ago
The word tetrad means" four" which states that it has four cells. They are formed by the meiosis in microspore mother cell. After meiosis 1 the number of cells is two and after the meiosis 2 the number of cells is 4. The ploidy remains to be haploid(n). Microspore tetrad cells are the microspores arranged in a group of four. Microspores are formed from microspore mother cell (MMC). MMC is a diploid cell which undergoes meiosis to form four haploid microspores which are arranged in a tetrad. ... Hence, ploidy of microspore tetrad cells is haploid.
Posted by Supriya Chaubey 5 years, 2 months ago
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Meghna Thapar 5 years, 2 months ago
Gynoecium is the female Reproductive Organ. heylo! two parts of flower are androecium (stamens) and gynoecium (carpels / pistils) are organs for sexual reproduction. In angiosperms, flower is the reproductive organ of the plant. Stamen, the male reproductive part of flower, is made up of anther and filament. Carpel is the female reproductive part and is composed of stigma, style and ovary.
Posted by Supriya Chaubey 5 years, 2 months ago
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Meghna Thapar 5 years, 2 months ago
Floriculture, branch of ornamental horticulture concerned with growing and marketing flowers and ornamental plants as well as with flower arrangement. These venues store a huge number of plants to be used in mass production. Floriculture comprises the cultivation of plants and flowers used in cosmetic use, the pharmaceutical and perfume industry, and also for decorative and aesthetic purposes, including bouquets and floral arrangements.
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Yogita Ingle 5 years, 1 month ago
Indian Basmati crossed with a semi-dwarf variety was claimed as a new variety, for which the patent was filed by a USA company.
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