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Two genes combine to generate the phenotype of the comb of a rooster. The 4 possible phenotypes are walnut, rose, pea and single. Rose has an absolute requirement for the presence of the dominant allele R and pea has an absolute requirement for the presence of the dominant allele P. Some of the chickens below may carry the corresponding recessive alleles r and p in the heterozygous or homozygous from (the somatic cells of chickens are diploid). A walnut comb rooster is mated to three hens. Hen A is a walnut comb and has offspring in the ratio of 3 walnut to 1 rose. Hen B is a pea comb and has offspring in the ratio 3 walnut, 3 pea, 1 rose and 1 single comb. Hen C is a walnut comb and has only walnut comb offspring. What are the genotypes of the rooster and the 3 hens? The answers are Rooster = RrPp ; Hen A = RRPp; Hen B = rrPp; Hen C = RRPP. I just can't see how these answers came about. Any help will be truly appreciated.
Will xylem fluid flow into the aphid. Which microbes are most susceptible versus most resistant to disinfectants? Why.
Determine the major trend in the evolution of land-based plants, starting from nonvascular plants to seed plants?
Discuss similarities and differences how a farmer would use Rhizobium versus Bacillus thuringiensis? Are there any other types of microbes the farmer could use for similar purposes?
Determine the treatment of non typhoidal salmonellosis as per the latest current guidelines? Provide the Drugs & their dosages. please ans in detai
Genes for color blindness and hemophilia are linked on theX-chromosome in humans with a recombination frequency of 30 %. Awoman whose father was a color blind hemophiliac and mother wasnormal with no history of color blindness and hemophilia wants..
A woman who undergoes an inulin clearance test has an inulin concentration in her urine of twenty mg/ml; an inulin concentration in her blood of 0.70 mg/ml.
Specify whether the taste of fresh water surprised you or not? Explain if your perception of coarseness change or not?
Think about a normal individual who quickly goes from a supine posture to an erect one. Predict the changes occur in the following cardiovascular parameters.
define how the rate of many enzyme catalyzed reactions varies with pH. What types of amino acids must be at the active site of an enzyme if its rate decreases at high pH.
Discuss when we compare amino acid differences to determine the evolutionary "distance" between organisms, what assumptions are being made about the rate at which mutations occur over time?
1) Identify the articulation site that allows us to nod our head "yes". choice (A) or (B) (A) Occipital bone - axis (B) Occipital bone - atlas Identify the articulation site that allows us to rotate our head.
Gases move from areas of high (total) gas pressure to areas of low (total) gas pressure. Also, the pressure of a "canned" gas changes if the container volume changes.
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