<span>In this ecosystem, frogs are:
A) consumers. </span>
Genetic variation is caused by mutations in the gametes and meiosis.
The large ears of the rabbits may help them hear when predators are coming. If they hear them coming, then they may be able to escape.
A polar bear with dark fur would be more obvious to its prey, who would more easily avoid him. The other white ones can blend in better and have a less chance of being detected by prey.
Organisms have genetic variation
The conditions change
The ones better at coping... survive
Survivors breed and pass on their variation
natural selection occurs
Some bacteria are more resistant
Antibiotic is added
Some bacteria survive
The survivors reproduce
Low levels of antibiotic remain
Charles Darwin
Hope I helped
An accurate summary of meiosis is D. A CELL DIVIDES INTO GAMETES.
Meiosis is a special type of cell division wherein only have of the DNA copies are made. Meiosis divides cells two times. First cell division is Meiosis I and second cell division is Meiosis II.
In Meiosis I, homologous chromosome pairs are segregated into two new daughter cells. In Meiosis II, the two new daughter cells produced in Meiosis I are again divided producing four daughter cells.
These four daughter cells become gametes when they mature. Some types of gametes are sperm, ova, pollen, or spores. They contribute to sexual production when facilitated together with fertilization.
Answer:
Option A
Explanation:
While making a Punnet square, The possible gametes produced are:
=> GK (Green and long)
=> Gk (Green and short)
=> gK (Yellow and long)
=> gk (Yellow and short)
Answer: the attached file is the structure of the eye.
Click on it to view and know the highlighted structure.
The correct answer to the question is option A.
CONTROLLING THE SHAPE OF THE LENS.
Explanation: The ciliary muscle is one of the structure of the eye occupying a largest part of the ciliary body.
It is made up of smooth muscle fibers arranged in circular,radial and longitudinal direction.
The major function of the ciliary body is to change the shape of the lens and modify it's curvature inorder to maintain focus and accomodation.
The ciliary muscle also controls the flow of aqueous humor in the eyes.
When we view nearby objects,the ciliary muscles contracts causing the lens to become thicker attaining a more convex shape and decreasing it's curvature,this why during the dark,we have to strain and squeeze the eye inorder to see and focus clearly on an object.on the other hand,when we are looking at a far object,the ciliary muscle dilates causing the lens to become thinner, spreading out light and increasing it's curvature( concave shape).