Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Zygote - Embryogenesis
The fertilized egg or zygote is situated at the micropylar end/pole of the embryo sac, its basal (micropylar) end is attached to the embryo sac wall and apical (chalazal) part projects into the central cell. The zygote usually undergoes a period of rest during which it shrinks. This resting period of the zygote varies with different species and is to some extent dependent on environmental conditions e.g. in Theobroma cacao the zygote divides 14 to 15 days after fertilization, in Oryza saliva zygote divides about 6 hours after fertilization.
A complete cell wall is formed around the zygote. (You would dl that the egg has only plasmalemma and no wall at its apical part). A TEM picture shows that zygote cytoplasm show a more polarized appearance and that is the two poles appear different, micropylar part is vacuolate and chalazal part with a prominent nucleus.
Placenta - Human Development We had said previous in the unit that in the second week of development a primitive uteroplacental circulation is established. Early in this stage
Q. What are the main causes of Mutation? Some mutations take place randomly and spontaneously during process of mitosis or meiosis. Others are caused by mutagenic agents that a
Dictyosomes are produced on the Organelles in the plant cells composed of the series of flattened membrane sacs which sort, chemically modify, and package protein srough endoplasm
What is the acrosome of the sperm cell? How is it formed? The acrosome is a structure that has a great number of digestive enzymes, it is located in the anterior end of the spe
Nature: Matter and Energy Nature is not just our immediate surrounding or environment, but is the whole Universe of Cosmos. Study of the origin and topography of cosmos is ca
What is Invertebrates? Invertebrates: About 99% of all the animals lack backbones, and are invertebrates! Invertebrates include the phylum Arthropoda, or the animals with joi
Energy Contrary to matter. Energy neither occupies space, nor possesses mass. Hence it is defined, not on physical ,but on operational or functional basis as the force whic
What is the difference between asexual and sexual reproduction
Improper Implant type in Improper Bone Type In routine sites with good quality bone, the clinician should prefer implants without any superadded HA coatings and avoiding their
What are some diseases or genetic abnormalities caused by recessive genes? Instance of recessive genetic diseases are: cystic fibrosis, phenylketonuria, albinism, galactosemia,
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd