I need help with my Home work the Question is A calico kitten that is cloned will not have the same colors?

Question

At a texas A and M University researchers have colned cattle, pigs, and goats. They are moving on to House pets. Genetic tests comfirm that the clalico kitten is a gentic copy of the original calico cell donor cat.

Question1 Interestingly the Kitten does not have the same coloring as the gentic parent... Why?

Answer 1

To make this as simple as possible . . .

The kittens still have the same DNA. The calico coloring is due to the genetic phenomina of X-chromosone inactivation. As I'm sure you know, every female cat has 2 X chromosomes. At an early stage of embryonic development, each individual cell will randomly "shut down" one of these chromosomes and all the genetic material it contains is not transcribed (it's ignored!). I must stress - the chromosome each cell chooses to inactivate is completely random!

Thus if a cat is heterozygous for their color gene, one chromosome would have a black allele and the other a rust allele. Because of X-chromosome inactivation, some cells will express only the black allele, some only the rust allele. As the cat develops from embryo to kitten the areas of the body derived from the embryo's rust-determined cells will produce rust-colored fur, the areas of the body deriving from black-determined cells will produce black fur.

It should be of note that the farther along in development this X-inactivation occurs the more patches the animal will have. If inactivation occured at a later stage, say the 512 cell stage, the animal is more likely to by a torti (with a patchwork of colors) while if the inactivation occured earlier, say the 32 cell stage, the cat will have bigger patches like a calico.

Also of note, the white color in calicos and tortis is NOT due to X-chromosome inactivation, but is due to a piebald gene independent of the process I described above.

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If you're looking for a better answer to your homework, I imagine that if you search for "calico" and "X-chromosome inactivation" you'll get something a bit more indepth and informative.

Answer 2

Becuase even though they are clones. The different combinations from each the X and Y chromosomes for colors in calicos don't match up . Although cc"s fur had a color pattern similar to her cell donor"s, the color was not exactly the same because patterns of pigmentation in calicos result from both genetic and developmental factors.

Answer 3

A calico, as well as a tortoise shell, are not breeds of cats, ONLY variations in the color of their hair. All calicos and tortoise shells are female. This does not mean any of their offspring will be the same color. They are a crap-shoot at best, from any mix and match breed of cat, and if you get one, keep it. They are really special cats. And their Moms know that too, as they dote on them more than the other kittens. I was lucky, my Momma cat had 2, one in her first litter, and one in her fifth. Neither kitten had a calico or tortoise shell in their two litters. Unfortunately, one was stolen, and the other got nailed by a coyote. By the way, I live on a ranch, and raise cats as a past time. Momma cat is now fixed and enjoying her 9th year in front of the fire place at night, and still showing her grand and great and great and great grand children how to catch prey. Hope this helps your assignment.

Answer 4

"Haryly kit"i think of that call is ideal on your calico kitten the call Harry is the call of the chief on Harry Potter and the action picture Harry Potter is kind a horror i've got basically made it Haryly via fact your kitten is a woman appropriate? and the call kit is the shortcut for calico kitten i've got basically made the be conscious kitten into kit for short.

Answer 5

Because all calico cats are female, also calico refers to the fact that there are 3 colors on the animal.

Answer 6

I really don't know but I think it is tied to chromosomes somehow, as male calicos are VERY rare. So it the kitten is a boy, that could be why. Maybe this will get you going in the right direction? It doesn't seem to me that a clone could be the opposite sex, but it's all I can think of.

Answer 7

Environmental factors strongly influence her development in the womb. http://www.bookrags.com/research/cloning-enve-01/

Calicos are essentially a three-dimensional mosaic of two cell types, one with genes for black-and-white coat patterns, the other with genes for orange and white. Because CC was cloned from a single cell, she got only the black- and-white gene, unlike her "mom," the typical calico mix of both types.http://www.sfgate.com/cgi-bin/article.cgi?file=/c/a/2004/04/15/MNGKF61C2A58.DTL

Although tests indicated that CC was a genetic duplicate of the cat that donated the original ovary cell, CC’s markings were quite different from those of Rainbow. Calico markings such as those possessed by CC are the result of random molecular changes that occur during fetal development. http://www.ncseonline.org/nle/crsreports/03Apr/RL31211.pdf

Answer 8

The calico kitten differs from its genetic donor in its color pattern, because such coloring is not strictly determined by the lineup of genes.

Answer 9

calico cats are never the same color and they are always female....... my question is why are they doing this is ?has no purpose if your going to clone some thing why not PAM ANDERSON WE DONT NEED ANYMORE OF HER EITHER

Answer 10

the reason for this is because it is a clone and the fact that is has a different DNA setting no one or thing has the same DNA setting and it also depends on if it is a male or a female