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!
Hybrid sterility can be regarded as yet another form of interspecific sterility. The offspring of the interspecific crosses are mainly sterile. Geological studies have shown that the chromosomes of the hybrid individuals fail to synapse at the time of meiosis and thus result in either non-production of gametes or defective gametes. Unless the chromosomes of parents are accurately separated which might result in viable gametes,, in most cases the gametes are not produced and if produced they may not be fertile. The commonly cited example is the mule, a sterile animal the product of a cross between a donkey and a horse. Further, the hybrid species in general are found to have grossly abnormal reproductive system. If normal reproductive system is present, then meiosis is abnormal and non-viable gametes are produced. Thus various types of reproductive isolating mechanisms are at work in different groups of organisms to maintain the distinctness and uniqueness of species.
Explain Some Functions of Riboflavin? Protective role: Riboflavin protects the octodermal tissues and prevents lesions of the skin, eye and nervous system. Riboflavin amelior
Difference between Ribosome and plant virus - RIBOSOME (RNA + Protein) PLANT VIRUS (RNA + Protein) 1. Does not mul
Are viruses cellular beings? Viruses are measured as living beings but they do not have cellular structure. There is some argument regarding their classification as living b
Development of Reserves - Conservation of Wildlife Establishment of Biological reserves, National parks, Forest reserves, Wildlife refuges and Biosphere reserves are effective
Examples of sex-limited traits
The left atrium is a thin walled cavity. Most of the wall is smooth. Musculi pectinati are present only in the auricle of the atrium. The interatrial septum separates the cavity of
TYPE S OF BONE - On the basis of its texture , a bone is of two types - Spongy or cancellous or tubercular bone and Compact or periosteal or dense bone.
Sir/Madam, I am a Banquet Farm Owner and face the problem with the Grass that in November & December the grass does not grow well or disappear beacuse of heavy foot fall. Is their
Q. What are the major morphological differences between monocot plants and dicot plants? The main separation criteria between monocots and dicots are: number of cotyledons (see
Pulse Each time the left ventricle contracts and forces blood into the aorta, it expands to adjust additional blood. And blood already present is pushed to other section and al
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