<span>It have 18
chromosomes in its eggs. Because it has 6 chromosomes in each somatic cells. So
6 x 3 = 18 chromosomes. This is because the mosquito received 3 chromosomes
from its mother and 3 chromosomes also from its father making up 6 chromosomes.</span>
<u>Answer:</u> "Chemical fossils"evidence supports the notion that sponges are some of the earliest known multicellular animals.
<u>Explanation:</u>
Sponges are multicellular animals, may belong to Ediacarian period likely to be 80 million years ago or earlier. They catered through a complex system of internal channels, by moving seawater.
Sponges are soft-bodied and very rarely protected as fossils, therefore finding evidence of existence is giant task. The key of their existence came to know from abnormal chemicals which is a steroids of a particular type generated sufficiently by them but virtually never by ordinary organisms.
Analysis of long strata sequence found in Oman and researchers have been able to extract these "chemical fossils" from samples spanning tens of millions of years — before, during and after the Ediacarian period.This gave clear evidence that sponges had to have evolved long before the great variety of multicellular organisms proliferated at the dawn of that time.
Answer:
Mutation
Explanation:
The main cause of variation within a population is usually through genetic mutation.
Mutation is the alteration of the genetic sequence within an organism. It often lead to formation of new genetic patterns and codes.
Most times, environmental influences are paramount to causing genetic mutation within a population.
Other times, it might be due to competition and some other internal factors.
Mutation can be transferred from parents to offspring in most cases.
The answer is Water yep hope this help
Answer: A) Increased GI mobility
Explanation: They sympathetic nervous system inhibits the activity if the stomach, therefore, GI mobility decreases and does not increase. The parasympathetic nervous system is the one that increases the GI mobility.
