Answer and Explanation:
The Cretaceous–Paleogene extinction, which occurred around 66 million years ago, is defined as a mass extinction that wiped out around three-quarters of species on Earth.
Among the organisms that disappeared during this event, we find mammals, birds, fish, sharks, pterosaurs, birds, reptiles, insects, and some plant species.
This event is marked by the presence of a sediment layer known as the K-Ph boundary which showed important levels of iridium, an element that is abundant in craters. Therefore, after its discovery, scientists hypothesize this extinction occurred due to the impact of the giant Chicxulub crater which changed the conditions of the atmosphere.
Answer:
T G G C T T
Explanation:
Adenine(A) pairs with tymine(T) and cytosine(C) pairs with guanine(G)
therefore the complementary strand is
TGGCTT
<span>The answer to this would have to be Esophageal varices.</span>
In mitotic cell division, one parent cell produces <u>two identical </u><u>daughter </u><u>cells.</u>
The correct option is (d) Two identical daughter cells.
<h3>Mitotic cell division</h3>
- In mitosis, the cell divides into two identical daughter cell that contains the same number of chromosomes as the parent cell.
- It divides into five stages: prophase, metaphase, anaphase, telophase, and cytokinesis.
- The different stages of this cell division are together called as mitotic phase (M).
Thus, the correct option is (d) two identical daughter cells.
Learn more about mitosis, here:
brainly.com/question/13536882
It could be from an ancestor other genes from older family members
