Final answer:
The traits of number of eggs laid per week and milk yield are quantitative traits influenced by multiple genes and can also be affected by environmental factors.
Step-by-step explanation:
The traits of number of eggs laid per week and milk yield are quantitative traits influenced by multiple genes. These traits are polygenic, which means they are controlled by multiple genes acting together to produce the phenotype. For example, the number of eggs laid per week in chickens is influenced by multiple genes that affect factors like egg production, size, and fertility.
The environmental factors can also influence these traits. For instance, the quantity and quality of food, temperature, and light can affect the egg production and milk yield in animals. Therefore, it is safe to say that these traits are both influenced by multiple genes and environmental factors.
In conclusion, the traits of number of eggs laid per week and milk yield are quantitative traits influenced by multiple genes and can also be affected by environmental factors.