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Double fertilization It carries two sperm cells to the female. A characteristic of angiosperms in which the pollen tube gametophyte in the ovule. The one sperm cell fuses with the egg cell and gives rise to the diploid embryo and the other sperm cell fuses with the two polar cells to form the triploid cell which develops into the endosperm.
Explain Point Mutations gene? Mutations involving single genes occur by addition, substitution, or deletion of a single base in DNA. Such mutations, called point mutations, ca
Alfred Sturtevant and Seymour Benzer's studies of recombination in both Drosophila and bacteriophage demonstrated which of the following? A. The gene is an indivisible unit and
Determine Water-soluble vitamins needs of school children and adolescents? The suggested requirements are given in Table 15.2 (ICMR 1990). Thiamine is computed as 0.5 mg/1000 K
Q Which is the chordate class considered an evidence of the transition of the vertebrates from the aquatic to the dry land environment? The amphibians are totally aquatic in th
how does these phylem parasites????
Gastrulation in some Animals As mentioned before gastrulation marks the beginning of morphogenesis that is development of body form and organisation of cells in the embryo. By
CHARACTERISTICS OF FEMALE'S SKELETON - 1. Skull is lighter. 2. Shoulders are nanow. 3. Sacrum is shorter but wider. 4. Pelvis is wider. 5.
Degrade a monoglyceride that has an 18-carbon fatty acid attached to it by Ester bonds. You will have to degrade the glycerol component followed by the fatty acid in presence of O2
Which gas in each of the following pairs would you expect to be more soluble in water? Why? (a) Oxygen and Carbon Dioxide (b) Nitrogen and Ammonia (c) Methane and Hydrogen Sulfide.
Q. What is the structure of the adult fern within which cells undergoing meiosis can be found? In these plants meiosis takes place within structures known as sorus (plural, sor
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