Answer:
The haploid gametes are formed by meiosis, a cellular process that involves two cell divisions and one round of DNA synthesis (i.e., four gametes with haploid DNA content). Subsequently, the gametes are fused during the fertilization to produce a diploid zygote. Finally, the zygote undergoes successive mitotic cell divisions where specific genes are expressed, this process enables the development of an embryo with different tissues and organs.
The respiratory system works directly with the circulatory system to provide oxygen to the body. Oxygen taken in from the respiratory system moves into blood vessels that then circulate oxygen-rich blood to tissues and cells.
Answer:
Mutations
Explanation:
A gene mutation is a permanent change in the DNA sequence of a gene. Mutations can occur in a single base pair or in a large segment of a chromosome and even span multiple genes. Mutations can result from endogenous (occurring during DNA replication) or exogenous (environmental) factors.
Answer and Explanation:
Macros are macronutrients. Your body needs these nutrients in larger amounts in order to function properly as macro means large. In addition, all of these nutrients provide your body with energy measured in the form of calories or kcals. There are three types of macronutrients: carbohydrates, proteins, and fats. But in this case the answer is protein.
