Which variable will determine the coat color of a Himalayan rabbit quizlet?
Which variable will determine the coat color in Himalayan rabbits? Both the genetics and the environment will determine the coat color.
What effect temperature has on Himalayan rabbits?
Based on your observations of Figure 1-1, conclude what effect temperature has on Himalayan rabbits. When the body of a Himalayan rabbit is cool, the rabbit's fur will grow in dark. When the rabbit's body is warm, the fur will grow in white.
What does the filled in squares of a Punnett square represent?
With this information, it is then possible to fill in the squares of the table, which represent all of the possible outcomes of the cross.
Which feature is found among an autosomal recessive pedigree?
Which feature is found among an autosomal recessive pedigree? Heterozygotes have a normal phenotype. Affected children will have at least one affected parent.
Which is a phenotype?
Phenotype refers to an individual's observable traits, such as height, eye color and blood type. A person's phenotype is determined by both their genomic makeup (genotype) and environmental factors.
What does the C H allele produce dark extremities only in bunnies?
The Himalayan allele in rabbits produces dark fur at the extremities of the body—on the nose, ears, and feet. The dark pigment develops, however, only when a rabbit is reared at a temperature of 25°C or lower; if a Himalayan rabbit is reared at 30°C, no dark patches develop.
Why do you think the change in fur color of the Himalayan rabbits may be beneficial for their survival in the cold winter?
A rabbit's fur will lighten during the winter months. The less exposure a rabbit has to the sun, the lighter its fur will become. This will often be very noticeable as a rabbit's winter coat can be very thick. This is also a defense mechanism, so your rabbit can blend into its environment easier.
Why do Himalayan rabbits have black fur?
Ice Turns Himalayan Rabbits Black Since the ears and feet of a Himalayan rabbit are colder they are generally black in color. In a classic genetics experiment a Himalayan is shaved and then an ice pack is placed on its back. The fur grows back black in the location that was cooled.
What is genotype in Punnett square?
The two things a Punnett square can tell you are the genotypes and phenotypes of the offspring. A genotype is the genetic makeup of the organism. This is shown by the three genetic conditions described earlier (BB, Bb, bb). The phenotype is the trait those genes express.
How is Punnett square used to determine the genotype?
A Punnett square allows the prediction of the percentages of phenotypes in the offspring of a cross from known genotypes. A Punnett square can be used to determine a missing genotype based on the other genotypes involved in a cross.
Is shaded dominant or recessive?
0:131:55Pedigrees – YouTubeYouTube
How do you determine if a pedigree is dominant or recessive?
If the trait is dominant, one of the parents must have the trait. Dominant traits will not skip a generation. If the trait is recessive, neither parent is required to have the trait since they can be heterozygous.
How do you determine phenotypes?
An organism's phenotype is determined by its genotype, which is the set of genes the organism carries, as well as by environmental influences upon these genes.
How do you determine a genotype?
To determine a genotype, you can use a Punnett square. If you are working in a more advanced laboratory, you can use analytical methods such as PCR analysis and nucleic acid hybridization to determine what genotypes are present.
How is coat color in rabbits inherited answer key?
How is coat color in rabbits inherited? Coat color in rabbits is inherited as a series of multiple alleles. This means that there can be more than just 2 alleles for a single gene. In the case of coat color in rabbits, there are four alleles, and each one is expressed with a different phenotype.
What is the phenotype of a rabbit with the genotype BB?
black color The B gene has two alleles: B and b. The B allele is considered the wild-type allele: it codes for black color. The b allele codes for chocolate (brown) color base. Assuming the rest of a rabbit's coat color genes indicate a solid, dark color phenotype and that rabbit has genotype BB at the B gene, it will be black.
What causes this change in fur color?
Changes in age, nutrition, temperature, sun exposure and various other factors can cause our bodies to change the amounts or types of hormones we make. The genes for making melanin might turn on or off over a lifetime, causing your hair color to change. Some animals change their hair color twice a year!
What causes rabbits to change Colour?
Color changes are an evolutionary survival mechanism, borne of a rabbit's status as prey animals. Rabbits molt several times a year. Their fur initially grows and then grows back a different shade, camouflaging them from potential predators.
How do Himalayan rabbits change color?
Ice Turns Himalayan Rabbits Black Since the ears and feet of a Himalayan rabbit are colder they are generally black in color. In a classic genetics experiment a Himalayan is shaved and then an ice pack is placed on its back. The fur grows back black in the location that was cooled.
What allele causes the Himalayan coloration?
Himalayan color is genetically determined by the allelic variant ch of the locus C, later identified as the tyrosinase gene TYR. The tyrosinase functions at the initial steps of melanin production, and alteration of its activity by sequence changes results in pigmentation defects in vertebrates.
What is the phenotype of YY?
Yy is the heterozygous genotype (one dominant allele, one recessive allele). The phenotype of this genotype is yellow seed color. yy is the homozygous dominant genotype (2 y alleles). The phenotype of this genotype is green seed color. The types of gametes produced by each individual depends on its genotype.
How do you determine genotype and phenotype?
0:292:064.3.2 Determine the genotypes and phenotypes of the offspring of a …YouTube
What is Punnett square give example?
A Punnett square is a chart that allows you to easily determine the expected percentage of different genotypes in the offspring of two parents. An example of a Punnett square for pea plants is shown below. In this example, both parents are heterozygous for flower color (Pp).
How do you determine genotypes?
To determine a genotype, you can use a Punnett square. If you are working in a more advanced laboratory, you can use analytical methods such as PCR analysis and nucleic acid hybridization to determine what genotypes are present.
What is shaded pedigree?
A completely shaded circle or square indicates that a person expresses the trait. A circle or square that is not shaded indicates that a person neither expresses the trait nor is a carrier of the trait. A black X. represents. death of the individual.
How do you determine the genotype of a pedigree?
0:5713:48Genotypes and pedigrees – YouTubeYouTube
Is TT a phenotype or genotype?
| Genotype | Definition | Example |
|---|---|---|
| Homozygous | Two of the same allele | TT or tt |
| Heterozygous | One dominant allele and one recessive allele | Tt |
| Homozygous dominant | Two dominant alleles | TT |
| Homozygous recessive | Two recessive alleles | tt |
How many genes are involved in determining rabbit fur Colours?
Coat color in rabbits is due to the interaction of 7 genes, possibly more. Use this handy table to work through the information presented in the collection of articles here on the OSU Extension site. This table lists the known genotypes, their function, and wild-type alleles.
How does temperature affect coat colour in rabbits?
This temperature regulation of gene expression produces rabbits with a distinctive coat coloring. In the warm, central parts of the rabbit's body, the gene is inactive, and no pigments are produced, causing the fur color to be white (Figure 1).
How is coat color in rabbits inherited?
Coat color in rabbits is inherited as a series of multiple alleles. This means that there can be more than just 2 alleles for a single gene. In the case of coat color in rabbits, there are four alleles, and each one is expressed with a different phenotype.