SAT Practice Test 9

Highlighted sections are referenced in several questions.
Some cheetahs have a rare fur pattern mutation of larger, blotchy, merged spots.
Known as "king cheetahs", they were once thought to constitute a separate subspecies but are in fact African cheetahs; their unusual fur pattern is the result of a single recessive gene.
The "king cheetah" has only been seen in the wild a handful of times, but it has been bred in captivity.
The king cheetah is a rare mutation of the cheetah characterized by a distinct fur pattern.
It was first noted in what was then Southern Rhodesia (modern-day Zimbabwe) in 1926.
In 1927, the naturalist Reginald Innes Pocock declared it a separate species, but reversed this decision in 1939 due to lack of evidence; but in 1928, a skin purchased by Walter Rothschild was found to be intermediate in pattern between the king cheetah and spotted cheetah and Abel Chapman considered it to be a color form of the spotted cheetah.
Twenty-two such skins were found between 1926 and 1974.
Since 1927, the king cheetah was reported five more times in the wild.
Although strangely marked skins had come from Africa, a live king cheetah was not photographed until 1974 in South Africa's Kruger National Park.
Cryptozoologists Paul and Lena Bottriell photographed one during an expedition in 1975.
They also managed to obtain stuffed specimens.
It appeared larger than a spotted cheetah and its fur had a different texture.
There was another wild sighting in 1986—the first in seven years.
By 1987, thirty-eight specimens had been recorded, many from pelts.
Its species status was resolved in 1981 when king cheetahs were born at the De Wildt Cheetah and Wildlife Centre in South Africa.
In May 1981, two spotted sisters gave birth there and each litter contained one king cheetah.
The sisters had both mated with a wild-caught male from the Transvaal area (where king cheetahs had been recorded).
Further king cheetahs were later born at the Centre.
It has been known to exist in Zimbabwe, Botswana and in the northern part of South Africa's Transvaal province.
In 2012, the cause of this alternative coat pattern was found to be a mutation in the gene for transmembrane aminopeptidase Q (Taqpep), the same gene responsible for the striped "mackerel" versus blotchy "classic" patterning seen in tabby cats.
The mutation is recessive, what is one reason the pattern is so rare.
Other rare color morphs of the species include speckles, melanism, albinism, abundism, chocolate, erythrism, strawberry, isabelline, golden, Maltese, chinchilla, black-marked, red-cream marked, ticked, charcoal, mosaicism, leucism, lavender-marked, piebaldism, and flavism.
Most have been reported in Indian cheetahs, particularly in captive specimens kept for hunting.
The Mughal Emperor of India, Jahangir, recorded having a white cheetah presented to him in 1608.
In the memoirs of Tuzk-e-Jahangiri, the Emperor, says that in the third year of his reign, "Raja Bir Singh Deo brought a white cheetah to show me.
Although other sorts of creatures, both birds and beasts have white varieties ...
I had never seen a white cheetah.
Its spots, which are (usually) black, were of a blue color, and the whiteness of the body also inclined to bluishness." This suggests a chinchilla mutation which restricts the amount of pigment on the hair shaft.
Although the spots were formed of black pigment, the less dense pigmentation gives a hazy, grayish effect.
As well as Jahangir's white cheetah at Agra, a report of "incipient albinism" has come from Beaufort West according to Guggisberg.
In a letter to “Nature in East Africa,” H.
F.
Stoneham reported a melanistic cheetah (black with ghost markings) in the Trans-Nzoia District of Kenya in 1925.
Vesey Fitzgerald saw a melanistic cheetah in Zambia in the company of a spotted cheetah.
Red (erythristic) cheetahs have dark tawny spots on a golden background.
Cream (isabelline) cheetahs have pale red spots on a pale background.
Some desert region cheetahs are unusually pale; probably they are better-camouflaged and therefore better hunters and more likely to breed and pass on their paler colouration.
Blue (Maltese or grey) cheetahs have variously been described as white cheetahs with grey-blue spots (chinchilla) or pale grey cheetahs with darker grey spots (Maltese mutation).
A ticked was shot in Tanzania in 1921; it had only a few spots on the neck and back, and these were unusually small.
Another ticked cheetah color-morph was photographed in Kenya in 2012.
How would you fix the following portion of the sentence in paragraph 4?
is recessive, what is one reason the pattern is so rare.