Answer:
Although elephants and hyraxes at first don't seem to have many similarities, a closer look has led many scientists to believe that these animals are evolutionarily closely related.
Elephants and Hyraxes share many reproductive characteristics that indicate a common ancestor: The location of the testicules in these animals diverges from most mammalian species, remaining inside the retroperitoneal abdomen. Females have similar placental origins and long gestation periods and the location of the mammary glands in both orders (above the front legs) is a unique feature among non-primate mammals. Hyraxes' tusks develop from incisor teeth, similar to elephants, and in both cases nails develop into flattened, hoof-like structures.
Molecular evidence has also been used to confirm the hypothesis of evolutionary relatedness between the two orders, as similarities in some gene sequences in mitochondrial DNA and other molecular components. Both animals have some physiological similarities and cognitive characteristics (such as the presence of a powerful long-term memory) that support the possibility of evolutionary proximity.
The fossil record indicates that in the Eocene period hyraxes were dominant herbivores in Africa, with several species, reaching much larger sizes than today and occupying different ecological niches, indicating that elephants and hyraxes may have been very similar millions of years ago.
Answer:
Enzymes allow many chemical reactions to occur within the homeostasis constraints of a living system. Enzymes function as organic catalysts. ... By bringing the reactants closer together, chemical bonds may be weakened and reactions will proceed faster than without the catalyst.
Explanation:
Answer: Unlike other bacteria listeria germ usually grow and spread in the refrigerator thereby contaminating the refrigerator and spread to the foods stored in the refrigerator
Listeria are known to be causative agent of rare bacterial
diseases called listeriosis. This infection are usually caused by eaten foods
that are contaminated by listeria.Thus, Listeria can cause serious illness in
newborns , pregnant women and adult with weaked immune system. unlike other
bacteria listeria germ usually grow and spread in the refrigerator thereby
contaminating the refrigerator and spread to the foods stored in the
refrigerator which consequently cause sickness in the family.
