Answer:
The dihybrid proportion for Mendelian example of legacy regularly gives a few deviations attributable to epistasis. One of these proportion incorporate the example of 9:6:1 proportion as opposed to ordinary 9:3:3:1. This proportion can be credited to nearness of copy qualities with total impacts. As per the above model, it very well may be seen that guardians are unadulterated rearing red and sandy in shading. Be that as it may, their offspring show up as red, sandy and curious white pigs in the proportion of 9:6:1 individually.
Explanation:
The information and perception recommend that the qualities liable for red shading and sandy shading are copy in nature and in total, they give sandy shading to the pigs. Be that as it may, nonappearance of any of these alleles in either homozygous or heterozygous condition neglects to produce a coat shading and a vapid white pig is raised. This likewise proposes deviation of Mendelian example of legacy occurs right now to explicit intuitive conduct of these two qualities for red and sandy coat hues. Disappointment of cooperation of these two alleles brings about white pig while nearness of both the alleles results in between allelic association and surprisingly, an extremely enormous number of sandy pigs are watched. Aggregately, it very well may be deciphered that both the qualities are predominant over one another. These alleles produce an alternate phenotype when present alone however produce an impossible to miss phenotype when present together due to between allelic associations. Significantly, it's anything but an instance of essentially added substance conduct of alleles in such a case that it had been, another phenotypic coat shading would have been acquired. Be that as it may, since the F1 offspring resumes the shading like their folks, it speaks to an instance of epistatic copy qualities.
The red-legged frog breeds in ephemeral ponds from January through March. Its relative, the bullfrog, breeds in permanent ponds from late March through May. There are two pre-mating isolation mechanism at play here,
1. Ecological isolation: The habitats are different, hence the individuals of both the species do not meet. Ephemeral ponds are temporary ponds that develop during rainy days, while the permanent ponds are full of water throughout the year.
2. Temporal isolation: The time of mating is different for both the species to avoid contact between the individuals of closely related species. Red-legged frogs mate in January to March slot and the bullfrog in the March to May slot.
Producers synthesize their food through photosynthesis using energy from sunlight and carbon dioxide from the Air. Their respiration returns carbon dioxide to the atmosphere. Consumers use the food produced by producers for energy. Their respiration also returns carbon dioxide to the atmosphere.
