For those unfazed by the recent drop in gas prices and want to find a car that delivers the best fuel economy for the money, weâre featuring the 15 most efficient non-hybrid/diesel/electric cars for 2015 in the accompanying slideshow, ranked according to their highway mileage ratings.
This term is most commonly used to describe calicos and tortoiseshell cats, which are nearly always female because of the gene composition. â Calico â Calicos have three distinct colors: orange, black and white. Dilute calicos are the same, except they are the paler version, so you have grey, peach and white.
The mutation that gives male cats a ginger-colored coat and females ginger, tortoiseshell, or calico coats produced a particularly telling map. The orange mutant gene is found only on the X, or female, chromosome. As with humans, female cats have paired sex chromosomes, XX, and male cats have XY sex chromosomes.he piebald gene is on a different chromosome. If expressed, this gene codes for white, or no color, and is dominant over the alleles that code for a certain color (i.e. orange or black), making the white spots on calico cats.