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A yellow lab and a brown lab are bred. All the puppies are black. 1. What...
Your black labrador has a genotype of BbEe. Which of the following is correct? Select all...
Your black labrador has a genotype of BbEe. Which of the following is correct? Select all that apply. your labrador could have had one yellow parent if he mates with a brown labrador, and ANY of pups are yellow, it means the brown labrador genotype has to be bbEe. if he mates with a yellow labrador it would be impossible to have any brown pups when he mates with a bbee labrador, the pups will be 1/4 black, 1/4 brown...
In Labrador retrievers, black coat color (B) is dominant to brown (b). Suppose that a black...
In Labrador retrievers, black coat color (B) is dominant to brown (b). Suppose that a black Lab is mated with a brown one and the offspring are 4 black puppies and 1 brown. What can you conclude about the genotype of the black parent?
In mice, black fur (B) is dominant over brown fur (b). Breeding a brown mouse and...
In mice, black fur (B) is dominant over brown fur (b). Breeding a brown mouse and a homozygous black mouse produces all black offspring. a. What is the genotype of the gametes produced by the brown-furred parent? ________________________________________________________ b. What is the genotype of the brown-furred parent? ________________________________________________________ c. What is the genotype of the black furred parent? ________________________________________________________ d. What is the genotype of the black-furred offspring? By convention, P stands for the parental generation. The offspring are called...
You wanted to identify the Lab with the BBEE genotype from F2 progeny of Cross II....
You wanted to identify the Lab with the BBEE genotype from F2 progeny of Cross II. You did a testcross of one black Lab with unknown genotype (B_E_) with the yellow Lab (bbee). What kinds of the puppies you may get from this testcross? A. all black B. 1 black to 1 brown ratio C. 1 black to 1 brown to 2 yellow ratio D. A and C E. all of the above
If a heterozygous (for both alleles) black dog is bred to a yellow lab whose parents...
If a heterozygous (for both alleles) black dog is bred to a yellow lab whose parents were both chocolate colored, what would the phenotypic ratios be? (Remember 4 X 4 Punnett Square).
You cross a brown dog with a golden dog and get all black puppies (assume that...
You cross a brown dog with a golden dog and get all black puppies (assume that this isn't just a coincidence and that you can ONLY get black puppies from this mating). What are the possible genotypes of the parents? You must SHOW YOUR WORK for credit. c.
2. In Labrador dogs, there are 2 loci that determine coat color. The first locus, B...
2. In Labrador dogs, there are 2 loci that determine coat color. The first locus, B is dominant to b. At least one B allele will produce black coat color, while the bb genotype produces a chocolate coat color. This first locus also determines nose color in Labradors: B_ black noses, and bb brown noses. The second locus has a genotype, ee, that is epistatic in nature. Any Labrador with an ee genotype will be yellow. A genotype containing at...
4. In horses, black coat is dominant to brown coat, and trotter to pacer. A black...
4. In horses, black coat is dominant to brown coat, and trotter to pacer. A black trotter mare has a brown pacer offspring. What is the genotype of the offspring? Genotype of the Mare (female parent)? Genotype of the Stallion (male parent)? Phenotype of stallion? If the stallion could have more than one genotype and phenotype, show how. Step 1: B - black coat; b = brown coat; T = trotter; t-pacer black trotter female x? Step 2: Steps 3...
the answer I gave was wrong 1 1 - - 1 Hair color is determined in...
the answer I gave was wrong
1 1 - - 1 Hair color is determined in Labrador retrievers by alleles at the Band E loci. A dominant allele B encodes black pigment, whereas a recessive allele b encodes brown pigment. Alleles at a second locus affect the deposition of the pigment in the shaft of the hair; dominant allele E allows dark pigment (black or brown) to be deposited, whereas recessive allele e prevents the deposition of dark pigment, causing...
A dog breeder has a female black Labrador Retriever that was one of a litter of...
A dog breeder has a female black Labrador Retriever that was one of a litter of puppies from a mating of a yellow lab with a brown lab. If he breeds this dog with a black stud that is also from a mating between yellow lab and a brown lab, what phenotypes and ratio which you expect among the puppies.
You cross a brown dog with a golden dog and get all black puppies (assume that this isn't just a coincidence and that you can ONLY get black puppies from this mating). What are the possible genotypes of the parents? You must SHOW YOUR WORK for credit. c.
4. In horses, black coat is dominant to brown coat, and trotter to pacer. A black trotter mare has a brown pacer offspring. What is the genotype of the offspring? Genotype of the Mare (female parent)? Genotype of the Stallion (male parent)? Phenotype of stallion? If the stallion could have more than one genotype and phenotype, show how. Step 1: B - black coat; b = brown coat; T = trotter; t-pacer black trotter female x? Step 2: Steps 3...
the answer I gave was wrong
1 1 - - 1 Hair color is determined in Labrador retrievers by alleles at the Band E loci. A dominant allele B encodes black pigment, whereas a recessive allele b encodes brown pigment. Alleles at a second locus affect the deposition of the pigment in the shaft of the hair; dominant allele E allows dark pigment (black or brown) to be deposited, whereas recessive allele e prevents the deposition of dark pigment, causing...
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