Answer:
c. all of these
Explanation:
Humans are animals as they are multicellular eukaryotic organisms that are mobile, heterotrophic and can reproduce sexually.
On further classification they belong to the phylum chordates as they possess the five anatomical features present in this phylum at some point in their lives. These features are presence of notochord, endostyle, pharyngeal slits, tail and dorsal nerve chord. They also have bilateral symmetry and possess a coelom.
Humans can be further classified as vertebrates as they possess the vertebral column. It is also known as backbone or spine and is characterized by segmented bone series separated by intervertebral discs. Hence, humans are animals, chordates and vertebrates.
Cataplexy is a loss of muscle tone or control that is often associated with narcolepsy.
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Answer:
Alleles of a gene are responsible for different traits
Explanation:
There are several variant of a gene which in pair leads to varied phenotypic characteristics or traits.
For instance, there are three alleles for blood group i.e A, B and O but there are in totality there are basic 8 blood groups including the categorization on the basis of Rh factor.
Likewise, there are several variations of skin color; however there are majorly six genes that are responsible for skin color.
So, basically alleles of a gene are responsible for different traits
There are more overweight humans than animals becuase humans can easily get food than animals. Animals are getting hunted, killed for food, so that makes it less likely for other animals to get to eat if their getting killed off.