Answer:
T o directly study bird predation on the moths, Dr. Kettlewell placed light and dark moths on the trunks of trees where he could observe them. He recorded the times a bird found the moth. Kettlewell also tested the idea that dark moths live longer in dark forests.
Explanation:
Answer:
Option A) Simple Prokaryotes.
Explanation:
- The first life that existed on Earth was the single-celled microbes who lack a well defined nucleus and are known as Prokaryotes
- They existed on Earth for almost four billion years ago.
- In Prokaryotes "Pro" means before and "Karyon" means nucleus which means they lacked nucleus and many other cell organelles that complex structures have.
- They are single celled organism adaptive of living in earth older environment.
Result: Simple Prokaryotes was the first life on earth.
<u>The eukaryotic cell differs from the prokaryotic cell in the following ways:</u>
- The eukaryotic cells have a <em>membrane-bound nucleus</em>, whereas the prokaryotic cell has a <em>non-membrane bound nucleoid</em>.
- According to the size, the eukaryotic cell is <em>large</em> when compared to the prokaryotic cell.
- The eukaryotic cell undergoes cell division through a process called <em>mitosis or meiosis</em>, whereas the prokaryotic cell divides through <em>fission or budding.</em>
- Membrane-bound <em>cell organelles</em> are present in eukaryotic cells whereas absent in a prokaryotic cell.
- The process of <em>gene expression</em> occurs in two different cell organelles (nucleus and cytoplasm) in the case of eukaryotic cells, whereas in the prokaryotic cell it occurs in the cytoplasm.
Answer:
A germline mutation, or germinal mutation, is any detectable variation within germ cells (cells that, when fully developed, become sperm and ovum). Mutations in these cells are the only mutations that can be passed on to offspring, when either a mutated sperm or oocyte come together to form a zygote.
Explanation:
