... amongst vertebrate zoologists & entomologists. Two reasons account for this .Firstly these are the groups that the authors of the BSC worked with. (Mayr is an ornithologist & Dobzhansky has worked mainly with Drosophila). More importantly Sexual reproduction is the predominate form of reproduction in these groups. It is not coincidental that the BSC is less widely used amongst botanists. Terrestrial plants exhibit much more greater diversity in their mode of reproduction than vertebrates and insects. There has been many criticisms of the BSC in its theoretical validity and practical utility. For example, the application of the BSC to a number of groups is prob ...
... chromosomes. The mitotic spindle also beings to form and the centrioles begin to move towards opposite ends of the cell. Also occurring later in prophase, the nuclear envelope fragments, and the microtubles attach to the kinetochores and overlap. In Metaphase, the chromosomes line up along the metaphase plate. The centromeres are all aligned and the sister chromatids straddle the metaphase plate. Anaphase beings when the sister chromatids are pulled away from each other. The chromosomess begin moving along the microtubles towards opposite ends of the cell, which is now in an oval shape. At telophase, the nonkinetochore microtubules elongate the cell even ...
... are used by the huge companies.Linux has the capability of running on the Digital Alpha systems so it can reach the advanced users.Other computer system is Macintosh Power PC that is used by graphical designers,press companies and advertising companies, can be run with Linux. The others are Sun Sparc&Sun Ultra, Amiga, 3Com Palm Pilot which are rarely used. This capability of Linux provides a large user number and user kind that makes Linux more popular.(www.linux.org) Linux has a powerful security system.It is almost impossible to write a virus for Linux because it must be 30-40 Mbytes.Also it has firewall system to protect the network from the hackers.If w ...
... such reef residents as groupers. The color patters change predictably from the "juvenile: to the "initial" subdued pattern of small adults to the "terminal" pattern in the largest adult males. The terminal male is the one with the brightest colors and gaudiest patterns. The moon seems to play an important role in fish reproduction. According to Peter H. Pressley, it appears that the moon/s light may be as important as its gravitational pull. "Some fishes may use periods of maximum moonlight for effective nest guarding during the week or so it takes for many demersal eggs to incubate. Since the larvae of many dermersal-spawning species are light sensitive, br ...
... poisonous to humans. They became ideal solvents for industrial solutions and hospital sterilants. Another use found for them was to blow liquid plastic into various kinds of foams. In the 1930's, household insecticides were bulky and hard to use, so CFCs were created because they could be kept in liquid form and in an only slightly pressurized can. Thus, in 1947, the spray can was born, selling millions of cans each year. Insecticides were only the first application for CFC spray cans. They soon employed a number of products from deodorant to hair spray. In 1954, 188 million cans were sold in the U.S. alone, and four years later, the number jumped to 500 ...
... limit to their southern range in the middle of Argentina, and their range is expected to be similarly limited to the southern and coastal states in the United States. They have hybridized to some extent with resident wild and hive populations of European honeybees. However, many of the basic African honeybee traits remain, including rapid population growth, frequent swarming, minimal hoarding of honey, the ability to survive on sparse supplies of pollen and nectar, and a highly defensive nature. Africanized honeybees are more difficult to manage than European honeybees and produce less honey. The businesses of many beekeepers in Latin American countries have ...
... and Alpha are different terms used to describe the brain waves given off during these states. When the subconscious (subcon) or “Alpha” mind is responding, different commands, or suggestions, can be implemented into the mind. The subcon mind can then execute these imbedded commands without any intervening of the conscious mind and body (Hunter). Hypnosis was first confirmed to be real by a Swedish therapist named Anton Mesmer around 1775. After publishing papers describing the Alpha Mind State, he named the entire process “Mesmerism”. When a person was hypnotized, they were considered “Mesmerized” (Hyde 84). He would mesmerize ...
... protect against pathogens and repair damaged neural tissue. * Axons are-capable of propagating nerve impulses. * Dendrites respond to specific stimuli in the extracellular environment. * Synapse terminals communicate information from the presynaptic cell to the posisynaptic cell. Structural Classification *Anaxonic neurons- have multiple processes and the axon is indistinguishable from the from the dendrites. They're fairly small. *Bipolar neurons- have two processes in which one is a dendrite, and the other an axon. The dendrite is distinguishable from it's extensive branching at it's distal end. it's less than 3Omm from tip to ti ...
... such other gases as ethane acetylene, and phosphine. has an average temperature of negative one hundred and seventy six degrees Celsius below zero. On the surface of planet winds can reach up to nine hundred mile per second. also has a jet stream. 's magnetosphere consuts of a set of doughnut-shaped radiation belts in which electrons and atomic nuclei are trapped. The belts extend more than two million kilometers from the center of and even farther in the direction away from the sun, although the size of the magnetosphere fluctuates, depending on the intensity of the solar wind. like Jupiter has many storm systems on the planet. From Earth appears to be a yell ...
... reduce greenhouse gas emissions worldwide and will prevent . Science Is occurring? - According to Accu-Weather, the world's leading commercial forecaster, "Global air temperatures as measured by land-based weather stations show an increase of about 0.45 degrees Celsius over the past century. This may be no more than normal climatic variation...and several biases in the data may be responsible for some of this increase." - Satellite data indicate a slight cooling in the climate in the last 18 years. These satellites use advanced technology and are not subject to the "heat island" effect around major cities that alters ground-based thermometers. - Pro ...
