Some breeds of dogs are characterized by the presence of a melanistic mask, which is a darkening of the fur near the nose, as shown by the arrow in this photograph.Which outcome is matched with a valid conclusion if dogs that were pure breeding for melanistic masks were crossed with dogs without melanistic masks?A. If 0 % of the puppies have a mask, the character is recessive.B. If 25 % of the puppies have a mask, the character is dominant.C. If 75 % of the puppies have a mask, the character is dominant.D. If 100 % of the puppies have a mask, the character is recessive.

2. A study found that children with light-coloured eyes are likely to have parentswith light-coloured eyes. On this basis, can we say anything about whether thelight eye colour trait is dominant or recessive? Why or why not?3. Outline a project which aims to find the dominant coat colour in dogs.4. How is the equal genetic contribution of male and female parents ensured inthe progeny?Rationalised 2023-24

Dogs are inbred for such desirable characteristics as blue eye color, but an unfortunate by-product of such inbreeding can be the emergence of characteristics such as deafness. A 1992 study of Dalmatians (by Strain and others, as reported in The Dalmatians Dilemma) found the following:(i) 31% of all Dalmatians have blue eyes.(ii) 38% of all Dalmatians are deaf.(iii) If a Dalmatian has blue eyes, there is a 42% chance that it is deaf.Based on the results of this study is "having blue eyes" independent of "being deaf"? No, since 0.38 is not equal to 0.42. Yes, since 0.31 * 0.38 is not equal to 0.42. Yes, since 0.38 is not equal to 0.42. No, since 0.31 is not equal to 0.42.

Dogs are inbred for such desirable characteristics as blue eye color, but an unfortunate by-product of such inbreeding can be the emergence of characteristics such as deafness. A 1992 study of Dalmatians (by Strain and others, as reported in The Dalmatians Dilemma) found the following:(i) 31% of all Dalmatians have blue eyes.(ii) 38% of all Dalmatians are deaf.(iii) If a Dalmatian has blue eyes, there is a 42% chance that it is deaf.Based on the results of this study is "having blue eyes" independent of "being deaf"? No, since 0.38 is not equal to 0.42. Yes, since 0.38 is not equal to 0.42. No, since 0.31 is not equal to 0.42. Yes, since 0.31 * 0.38 is not equal to 0.42.

Labrador retriever’s fur color is controlled by two alleles, E and B. The B/b gene codes for hair pigment, while the E/e gene controls whether or not pigment of any color will be show in the hair. This is an example of _____.Group of answer choicesepistasispleiotropyincomplete dominancecodominancemultifactorialpolygenicNext

Labrador retriever’s fur color is controlled by two alleles, E and B. The B/b gene codes for hair pigment, while the E/e gene controls whether or not pigment of any color will be show in the hair. This is an example of _____.Group of answer choicesmultifactorialcodominanceepistasispolygenicpleiotropyincomplete dominance