gentoo penguins will present a mate with a pebble that they find to attract a mate. emperor penguins have a specific call and movement that they make to attract a mate. which type of isolation do these penguins demonstrate?

Answers

Answer 1

Answer: The answer is behavioral isolation.

Reproductional isolation is a way to prevent closely related species to mate each other. This is due to reproductive barriers which can be either prezygotic (before fertilization) and postzygotic (after fertilization) barrier. Behavioral isolation is an example of postzygotic barrier. It is based on behavior, including mating sounds and rituals. Thanks to behavior isolation, the different species (in this example gentoo penguins and emperor penguins) will have different mating rituals so they could attract only individuals of their own species, respectively.

Related Questions

A characteristic of acids is that they react with metals to:form non-metalsrelease waterrelease hydrogen gasproduce bases
Which of these have prokaryotic cells?a. snails c. bacteria b. frogs d. food
Which of the following is a result of a change in pressure?a. Frost wedging b. Oxidation c. Exfoliation d. Chemical feathering
What is the SI unit of measure for sound intensity
"An animal's behavior is based on learning."This statement would most likely come from a(n) _____.ethologistcomparative behaviorist

How many bases are in a codon

Answers

There are three bases, I think

There are 20 amino acids, but 3 bases.

What condition is a result of using an anaerobic digester

Answers

The condition involving a series of biological processes in which biodegradable material is broken down by microorganisms in the absence of oxygen to make biogas or biofuel. This end product is used for generating electricity, converting it into transportable fuel or variety of other purposes. This method is in practical use in several places.

Air moves out of the lungs when the(a) diaphragm relaxes and the rib cage moves inward.
(b) air pressure inside the lungs is less than the external air pressure.
(c) diaphragm contracts and the rib cage expands.
(d) air pressure inside the lungs is the same as the external air pressure.

Answers

When the diaphragm relaxes, air is forced out of the lungs.

The diaphragm relaxes, and the dome moves upwards.
As for the ribs, they move upwards and outwards in inspiration, again to increase the volume of the chest cavity, and downwards and inwards in expiration.

The fertility rate measures the average number of children parents want in a year. T F

Answers

False. Fertility rate refers to the number of children who would be born to hypothetical females (or per 1000 females) over their whole reproductive life.

Give Reason:-1)Vegetables release water after salt is added to them

2) Nucleus is absent in red blood cells

3) The skin of your fingers shrinks when you wash clothes for a long time

4) Inner membrane of mitochondria is folded

5) Vegetable vendors regularly sprinkle water on the vegetables in their baskets.

6)Endocytosis occurs only in animals

Answers

1 reason :
there are two reasons for this due to attraction of positive salt ions or negative water ions or it happens because the vegetable has more concentration of water init while in surrounding has low concentration of water so they try to lose water to attain equilibrium with respect to their surrounding...this is called osmosis...
2 reason:
due to absence of nucleus in red blood cells it is biconcave in shape,,,,
it is absent so that RBCs have more space to carry out oxygen
also this absence make the cell able to bend whenever it is passed through bloodstream:)
3 reason:
our skin in water shrinks because the outermost layer of our skin swells by absorbing water but at the same time underneath layer gets tightly attach to it ,,,to compensate the surface area so it seems shrink...
4 reason:
to increase the surface area as a result of which large and faster production of ATPs takes place ...
5 reason:
so that vegetables do not get dry ,,, because they dry they do not look fresh...
6 reason:
endocytosis is a process in which cell membrane engulfs material... but in plant cell cell membrane is not present they have cell walls :)

A specific type of bacteria reproduces through binary fission every two hours. If there are seven bacteria, to begin with, how many bacteria will there be after four hours?

Answers

Answer:

Explanation:

Binary Fission basically means each bacteria splits into two. So after the first two hours, the 7 bacteria split into 14. After the next two hours, the 14 bacteria each split and the end result is 28 bacteria.

Answer:

Explanation:

Other Questions

The picture shows a contractile vacuole of unicellular freshwater

What pattern does the rails and rungs is on ladder structure?

In a water treatment plant, bacteria are used to digest material in the water. However, these bacteria can be harmful to humans. Because of this, what other steps must be taken in the treatment of water?. . A.Treated water must be moved long distances before being dumped in the ocean.. B.Water must be dumped in the ocean so humans do not accidentally drink it.. C.Chemicals must be added to kill the bacteria after they have finished digesting.. D.The water that contains bacteria must be disposed of so humans do not drink it..

The shape of a mineral's crystal indicates it _____.