Table of Contents
What is the genotype for a homozygous recessive cat?
Dominant and Recessive Genes: If a cat is homozygous (BB or bb) the same message is sent and received, both genes on that pair of chromosomes are identical. If it is heterozygous (Bb) the dominant gene is in control – the recessive (b) is still there, but may have little or no effect over (B) its dominant partner.
What is the phenotype of a cat with a genotype SS?
The genotype Ss is a heterozygous genotype. In this genotype, the expression of the (S) allele will dominate over the expression of the (s) allele. Therefore, the phenotype for Ss genotype will be short fur.
What is the genotype of a cat with white fur?
Cats with a S+ S- genotype have areas of white and colored coat, where the white areas cover ~50% of the total coat. The white masking gene is involved in the replication and migration of pigment-producing cells during embryonic development.
What are the phenotypes of the cat?
In male cats, this locus can normally produce only two phenotypes, black or orange, whereas in females it can produce three phenotypes: black, orange, and tortoiseshell. This is because males are normally XY (heterogametic), and therefore have only one X-chromosome.
How is multiple allele applied in cats?
Explanation: White or non-white: The white locus has two alleles. W is dominant, so cats with the WW or Ww genotypes have completely white fur. Cats with the ww genotype have some non-white fur.
Do cats have recessive genes?
Cat fur length is governed by the Length gene in which the dominant form, L, codes for short hair, and the recessive l codes for long hair.
Is white a recessive gene in cats?
The dominant white gene (WD) encodes complete white coloration by disrupting replication and migration of melanocytes into the skin. It is also associated with blue eyes and deafness. Because it’s inherited in a dominant manner, one variant is enough for the trait to be expressed.
What happens when a cat has one blue eye?
Some cats have mixed eye colors, like one blue eye and one green eye. In that case, Dr. Lyons says a hearing impairment may happen in just one ear, particularly on the side of the face with the blue eye. If your kitten has blue eyes, her eye color will likely change.
When do kittens eyes change from green to blue?
When kittens are around a month old, their eyes will start changing color from blue to amber, gold, iridescent green, or even yellow-gold. On the other hand, there is a strong possibility, as well, that her eyes will simply remain blue in color or change to a new blue hue.
Which is recessive to the colour allele C?
Both alleles are recessive to the colour allele, C but are codominant with eachother. The homozygous genotype c3c3 reduces most pigmentation (natural colour) across the animal, reducing pigment production in the eyes, resulting in bright blue, vivid eyes.
Why does Chloe have the same blue eyes?
This means Chloe’s heterozygous… because blue eyes in cats are ALWAYS recessive. The kitten also displays the same hair pattern. This is Annie, my indoor cat… she sleeps for 18 hours a day. She and the next cat take the most explaining.