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Licemer1 [7]
2 years ago
15

provide an example of a postzygotic mating barrier, and explain how it works to reinforce reproductive isolation in an area of s

econdary contact.
Biology
1 answer:
AysviL [449]2 years ago
5 0

An example of a postzygotic mating barrier, low hybrid viability .

Hybrid offspring are born but have lower fitness and are therefore less likely to reach sexual maturity. Another example is where hybrid offspring is healthy but unable to breed.

Postzygotic mating barriers reduce the reproductive capacity of hybrid offspring. The three types of postzygotic barriers  are hybrid zygote abnormality, hybrid infertility, and low hybrid viability . Many research theory suggests that incompatibility alleles those who have evolved neutrally are not able to be maintained in secondary contact.

To learn more about Postzygotic mating barriers , here

brainly.com/question/14171722

#SPJ4

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Which of the following statements does not highlight a difference in eukaryotic and prokaryotic translation?
andreyandreev [35.5K]

Answer:

The correct answer is a and e.

Explanation:

Translation is the process by which mRNA is translated into proteins. It occurs in both prokaryotes and eukaryotes. In prokaryotes, transcription and translation occur simultaneously while in eukaryotes translation is a separate process occurs in the cytoplasm after transcription.

The first amino acid incorporated in the polypeptide is methionine in eukaryotes and formyl methionine in prokaryotes. After protein synthesis in both eukaryotes in prokaryotes, post-translational takes place like glycosylation, acetylation, alkylation, etc.  

Post translation is important for proteins to provide them heterogeneity and functional activity. Thus, the correct answer is a. the first methionine in eukaryotic translation contains a formyl group and e. many eukaryotic proteins are chemically modified after translation, which is a much rarer phenomenon in prokaryotes.

3 0
4 years ago
What did the Na (sodium atom) give to CI
ipn [44]

Answer:

A) one electron........

3 0
3 years ago
Cuantas cromosomas sexuales tiene un perro
vichka [17]

Answer:  es decir un total de 78,

Explanation:

Los perros tienen 39 pares de cromosomas, es decir un total de 78, de estos 78 cromosomas 39 contienen la información genética de la madre y las otras 39 la información genética del padre. Desde la fertilización del óvulo, comienza el proceso de crecimiento, los núcleos de las células comienzan una multiplicación exacta, de esta forma crean nuevas células.  El número de cromosomas en cada especie es constante, salvo que se padezca de algún síndrome el número siempre será el mismo.

6 0
3 years ago
The pharynx functions as a passageway for __________, whereas the larynx functions as a passageway for __________.
uranmaximum [27]

The Pharynx is the passageway way for food

The Larynx is the passageway for air


<h3>Pharynx </h3>

The Pharynx is a long tube that is located in the throat region, it helps in the smooth passage of food from the mouth and down to the stomach where it is needed for body metabolism

<h3>
Larynx</h3>

The larynx helps in the free flow of air, it is sometimes called the voice box. It plays a vital function by blocking the windpipe from taking in food particles


For more information on Pharynx and larynx, please see the link below

brainly.com/question/9064940?referrer=searchResults

4 0
2 years ago
please give 2-3 examples (for each one) of producers, primary consumers, secondary consumers, tertiary consumers, and quaternary
Elis [28]
Producers:

One example of producers found in food chains include plants. They use photosynthesis to make their own food. Examples of plants include trees, grass, moss, flowers, and weeds, to name a few.

Primary consumers are herbivores, feeding on plants. Caterpillars, insects, grasshoppers, termites and hummingbirds are all examples of primary consumers because they only eat autotrophs (plants).

Types of Secondary Consumers
Spiders, snakes, and seals are all examples of carnivorous secondary consumers. Omnivores are the other type of secondary consumer. They eat both plant and animal materials for energy. Bears and skunks are examples of omnivorous secondary consumers that both hunt prey and eat plants.


In the real world, a tertiary consumer can eat many different animals and even plants sometimes. This means that they can actually be carnivorous or omnivorous. Some examples of tertiary consumers include, birds of prey, big cats, and foxes.
7 0
3 years ago
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