A tunicate tadpole larva contains several chordate features, such as the notochord, dorsal nerve cord, and tail. These features are lost, however, as the larva metamorphoses into the adult form. The tunicate larva has special organs of sense and attachment, which it uses to find and occupy a suitable habitat
Hope this helps!
Have a great day :)
Ummmm because the gravity pulls it down because of its weight
Here are a few general differences between the planets Venus and Mars :
<span>Venus is hotter than Earth and is the hottest planet in the solar system (hotter than Mercury), Mars is colder than Earth.Venus is the second planet from the Sun , Mars is the fourth planet from the Sun. Venus is an inferior planet from Earth, Mars is a superior planet .<span>The astronomical (and astrological) symbol of Mars is the following one (Free image from Wikipedia):</span></span>
Answer:B.) Substitution
Explanation: Mutations are permanent changes in the nucleotide sequence of a DNA molecule. Substitution leads to a point mutation if only one nucleotide is replaced by another.
A substitution mutation occurs when one or more nucleotides in a DNA sequence is replaced by another nucleotide.
Example of substitution is in sickle cell hemoglobin in which valine replaces glutamate at position six in the two beta chains of hemoglobin. In a normal hemoglobin, the two beta chains of hemoglobin have glutamate at the sixth position but in a sickle cell hemoglobin, valine is found at position six on the two beta chains. This is also an example of a point mutation.
