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Q. Show the Embryological Evidence?
Embryology is the study of the successive stages of sporogencsis , gametogenesis and the growth and development of the embryo. The number of nuclei in the pollen grains at the time of pollen dispersal is either two or three. Double fertilisation is an example of embryological unity throughout the angiosperms. Based on the number of cotyledons, monocotyledons are separated from dicotyledons. The binucleate pollen is derived. Embryology has had systematic significance in the grass family, where with several other characters it has been used to revise the family's classification. In animals the embryological evidence is of great significance, e.g. the Anopheles maculipennis complex is broken into a number of sibling species on the basis of their egg structure. In Dacus oleae and ceratitis capitata.(fruit flies) the whole eggs are separated on the basis of the character of anterior pole and the whole classification of white flies is primarily based on the structure of their pupae.
In rats, the gene pigment (P) is dominant to no pigment (p). The gene for black (B) is dominant to the gene for cream (b). If a pigment gene (P) is absent, genes B and b are inoper
is rhinobatis poisonous?
Q. Guidelines for the Family Members for Healthy Coping? - Patient and the family members should discuss the situation, change in role,time distribution, share of money and oth
The passive transport of molecules across a membrane does not require an input of metabolic energy. Rate of the diffusion or transport is proportional to the concentration gradient
detailnote on structure of stomach
explain the digestive system with slides because i want to prepare this topic for CSS examination
What is Kingdom Protista in diversity of life? Members of Kingdom Protista are grouped separately from the other eukaryotic kingdoms because most of the organisms have a unicel
BACK CROSS When F 1 individual (Tt) is crossed with one of the two parents, either tall (TT) or dwarf (tt), such a cross is called the back cross. There are two possibilities
What is a community? What is the difference among the methods of community and population? A community is a set of populations of living beings that live in the similar region
Yeast is cultured in the presence of radioactive phosphate and the following biological molecules are purified. Which molecule should be most radioactive? A. An oligosaccharide B.
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