Answer:
Polytene chromosomes may be defined as the giant chromosomes that contain alternate dark and light bands when view under the microscope. These chromosomes are found in the salivary gland of Drosophila.
These glands are functionally highly active and contain thousand of DNA strands. These chromosomes are aligned parallel with each other as the replication is normal but the cells are unable to separate and fails to undergo the process of cytokinesis.
Answer:
c..
- similar Gene's
Explanation:
I did a question. very similar to this one and I got similar genes
An extinction event is a well-known
and quick decrease in the biodiversity on Earth. Such an occurrence
is recognized by a sharp change in the diversity and abundance of multicellular organisms. It happens when the
rate of extinction surges with respect to the rate of speciation.
In other words, this happens when species cannot adapt generally to the change
in the environment. So the correct answer would be letter a.
Mitosis is process when a cell splits to create two identical copies of the original cell while meiosis cells split to form new cells with the usual number of chromosomes occurs for sexual reproduction while mitosis asexual reproduction
Air and pressure cause metamorphic. Igneous is magma and water
