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Individuals with the rare Bombay phenotype (hh) do not express H antigen (also called substance H), the antigen which is present in blood group O. As a result, they cannot make A antigen (also called substance A) or B antigen (substance B) on their red blood cells, whatever alleles they may have of the A and B blood-group genes, because A ...
Miscolours occur quite rarely in dog breeds, because genetic carriers of the recessive alleles causing fur colours that don't correspond to the breed standard are very rare in the gene pool of a breed and there is an extremely low probability that one carrier will be mated with another.
Helicobacter heilmannii s.s. (H. heilmannii s.s.) is a species within the Helicobacter genus of Gram negative bacteria. [1] Helicobacter pylori (H. pylori) is by far the best known Helicobacter species primarily because humans infected with it may develop gastrointestinal tract diseases such as stomach inflammation, stomach ulcers, duodenal ulcers, stomach cancers of the non-lymphoma type, and ...
Impressive (April 15, 1969 – March 20, 1995) was an Appendix Quarter Horse, who earned his full AQHA registration in 1971.He was the 1974 World Champion Open Aged halter stallion, the first such World Champion in his breed, despite carrying only 48 halter points in total.
At the northernmost extremity of its range, it can be almost twice as large as in the middle of its range. In Saskatchewan, rare specimens have been recorded over 9 kg (20 lb). It has distinctive large black-tipped grey ears that are chestnut brown and white on the inner surface, and the long, powerful hind legs characteristic of hares.
The earliest bonneted bat fossil was discovered in 1922 in Melbourne, Florida. [5] The fossil consisted of a preserved jawbone that dated back to the Pleistocene; its similarity to genera Eumops and Molossus was noted, but it was initially placed into a new genus, Molossides, due to what appeared to be a unique dental formula. [5]
The gene responsible for albinism in sea cucumbers has been found, and used to engineer white sea cucumbers, a rare delicacy. The technology also opens the way to investigate the genes responsible for some of the cucumbers more unusual traits, including hibernating in summer, eviscerating their intestines, and dissolving their bodies upon death ...
[25] [26] In 6 out of 8 Canadian provinces where golden eagles breed, over 10,000 birds were observed in breeding bird surveys. [27] In 1981, it was estimated that there were 63,242 wintering individual golden eagles in the 16 Western United States (excluding Alaska). [28] However, there has still been a noticeable decline in some areas.