Answer:
Option (d).
Explanation:
Mutation may be defined as the sudden, heritable change in the nucleotide sequence of the organism. Mutation may occur due to the errors in DNA replication or may occurs due to the mutagens.
Joshua and Lederberg experiment explains that mutation is the non adaptive and random process that occur in the organism. He used the replica plating of E.coli and grows them on streptomycin drug. The bacteria was grown on the the primary plate and they are transferred to the secondary plate with streptomycin drug in the growth environment. The resistant strain of bacteria grows in the streptomycin environment.The pattern of bacteria growth on the plate explained that mutation occurs randomly and it is a non adaptive process.
Thus, the correct answer is option (d).
Out of the macromolecules present and required for the survival of an organism, the type of macromolecules that are categorized as enzymes would be proteins. Certain proteins can act as biological catalysts that aid in chemical reactions by helping speed up the rate of change of a reaction from reactants to products.
Answer:
The foramen magnum was not located at the bottom of the skull
Explanation:
The foramen magnum is a large hole or opening found in the base of the skull through which the spinal cord passes.
The position of the foramen magnum is important since it allows the skull to balance on the body hence essential for posture.
Humans are bipedal and Howler monkeys are quadrupedal hence the positioning of the foreman will be different.
That is how the skull found was realized it was not human
Answer:
After the vernal equinox, the most direct rays of the sun striking the earth continue to migrate north. On June 21/22, the most direct rays of the sun fall on locations situated at 23.5 degrees north latitude.
Algae are large cells having multiple nuclei. T<span>he invasive caulerpa algae genus break the rules of sa:vol because they have multiple nuclei.
They are able to do so because multiple nuclei helps efficiently to do so at their large size. Caulpera is a specie of large green algae and they often act as invasive species.</span>
