Answer:
1128.
Explanation:
The phenotype for dominant tasters is 1482.
The phenotype for recessive tasters = 2400 – 1482 = 918.
Recessive phenotypes = 2400 – 1482 = 918.
The frequency of the recessive phenotype = q² = 918 / 2400 = 0.38.
The frequency of the recessive allele q = √0.38 = 0.62.
For the dominant allele frequency, p = 1-q = 1- 0.62 = 0.38.
The heterozygous frequency = 2pq = 2 × 0.38 × 0.62 = 0.47.
The number of heterozygous individuals within the population = 0.47 × 2400 = 1128.
Thus, the result is 1128.
The "passenger pigeon" was once the most prevalent bird in North America, with populations soaring to around 3 billion. They typically traveled in large flocks. Their decline began in the 19th century as they were hunted for food due to their affordability and taste. Additionally, they served as a valuable protein source and were easy to capture because of their numbers despite their fast flight. Some were killed to prevent crop damage, and their nesting habitats faced disturbances, leading them to leave forests. Over-hunting, exacerbated by technological advancements, resulted in more pigeons being killed than were being born, leading to their extinction, with the last one dying in 1914.
Answer and Explanation:
The structure of a jaw can reveal significant details regarding its role and how the animal adapts to various conditions. These features are crucial for identifying a new species. However, it is essential to consider numerous additional factors as well.
When analyzing the mandibles from various known species alongside that of a new species, when seeking insights into the behavior, particularly its diet, a detailed comparison of all components involved in feeding is necessary. This includes:
- Teeth. As the most developed parts in animals, teeth deliver vital data about the species. They play a fundamental role in taxonomic classification and evolutionary relationships. Teeth can be homodont or heterodont, meaning they may be uniform or consist of different types serving varied functions. The shape of teeth also changes based on dietary needs, leading to distinctions among herbivores, carnivores, and omnivores. The quantity of teeth may vary as well, influenced by feeding habits and dietary preferences.
- Processes. The mandible's shape is another key aspect. The dimensions of various processes can offer insights into muscle development, informing assumptions about the mandible’s significance in feeding and the strategies animals adopt as per their diet. Different prey may necessitate the evolution of distinct muscle structures. These processes serve as the attachment points for muscles, so their size can help deduce muscle mass and consequent utilization.
- Length. The length of the mandible among different species often correlates with their type of prey and feeding techniques. By measuring the ramus, one can infer dietary choices.
Thus, if one possesses multiple jaws from various known species along with their primary diets, the next step is to compare the teeth, processes, and dimensions of the new species against the established ones. Such comparisons will yield compelling evidence regarding the diet of the new species.
