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!
Self- vs. Cross-Pollination
A major advantage of self-pollination is its certainty. Continued self-pollination over many generations, however, results in weaker progeny. This is considered to like inbreeding depression. From the evolutionary point of view, self-pollination is a disadvantage as 'there is no scope of genetic recombination. Cross-pollination brings pollen grains from other plants which are genetically different. Genetic heterogeneity is advantageous for the plant in many respects.
The offspring are more vigorous and better adapted for survival even under adverse environmental conditions. Thus cross-pollinated species show wider distribution when compared to self- pollinated species. Thus cross-pollination is favorable for evolution. The main disadvantage of cross-pollination is its uncertainty. It also involves considerable expenditure of resources by the plants as they have to produce an enormous amount of pollen, as compared to self-pollinated plants, to compensate for wastage. Further, when the pollinating agent is an animal, the plant should also provide adequate rewards for the pollinating agent in the form of pollen or nectar.
Explain the Behavioural Observations of the child Behavioural observations of the child are the second critical source of information available to the neuropsychologist. Qualit
Define the role of riboflavin in Drug and lipid metabolism? Flavoproteins catalyze dehydrogenation reactions, as well as, hydroxylations, oxidative decarobxylations, deoxygenat
What is the Axes of Fick The Axes of Fick show that any eye position can be specified as the amount of rotation around a set of axes fixed in the orbit: 1) Vertical Axis: Z-
The typological species concept was suggested by Plato more than 2000 years ago. According to this concept, the immense variety in nature can be reduced to a few "types". Individua
Aneuploidy : One or inore chron~osomes of a normal set nlay bc lacking or present in excess. The term riullison~y refers to absence of both the chromosomes of a pair. Monosomy, tri
If a solution has a pH of 7.5, what would its new pH be if the concentration of H 3 O ions in the solution were increased by 100 times? Explain your reasoning. As a tenfold inc
Q. Why does not a long lasting vaccine against common cold exist yet? Viruses that present a high mutation rate like the virus that causes the common cold escape easily from th
What are the genes responsible for the toxic substance in bt?
Oceanic islands are interesting and somewhat specialised biomes. Islands which have broken away from the main continents have similarity of flora and fauna related to the continent
Explain Saquinavir Saquinavir (SQV, Fortovase, Invirase) - When administered as a single protease inhibitor, a soft-gel preparation (Fortovase) with improved bioavailability an
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: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd