Answer:
A
Explanation:
A tundra is a cold biome. It contains frost, extremely low temperatures, little precipitation, and few plants and vegetation.
Answer:
innate immunity : highly specialized defenses.
Explanation:
Immunity against infectious diseases are 2 types - innate immunity and acquired immunity. Innate immunity is the type of defense mechanism which is present at birth. This type of immunity does not depend upon the immunization. This type of immunity is not highly specific as acquired immunity. Innate immunity has no memory and response in first-rate towards the antigens. The phagocytic cells, dendritic cells are some cells of the innate immune system. This changes throughout the lifetime. Different species have different innate immunity. It means different species show different susceptibility to different diseases. e.g Rats are unsusceptible to Diphtheria while men, guinea pigs are highly susceptible to Diptheria.
Have mammary glands - GradPoint answer (you can do this)
Mitosis is a division of a single cell into two identical daughter cells. It consists of four phases: prophase, metaphase, anaphase and telophase and cytokinesis. During metaphase, sister chromatids join together in the middle of the cell, so that during anaphase they can separate from each other to the opposite sides of the cells where they will represent future "nucleus" of the daughter cells. However, is metaphase was skipped, sister chromatids would not join in the middle, and consequently, they would not separate in anaphase. One of the possible consequences is that mitosis will stop and the cell would not divide. On the other hand, it could lead to unequal distribution of chromatids, so one cell will get both copies of chromosomes and the other will lack in chromosomes, which is lethal in both situations.
