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Vladimir [108]
3 years ago
14

Two organisms can be considered to be of different species if they

Biology
2 answers:
yuradex [85]3 years ago
8 0
Organisms belong to the same species if they can interbreed to produce viable, fertile offspring. Species are separated from one another by prezygotic and postzygotic barriers, which prevent mating or the production of viable, fertile offspring.

I would say the second one.
tester [92]3 years ago
7 0

Answer:

the second one, is the most reasonable one.

definitely not the last one.

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Which of these is the most likely reason why the auroras Are sometimes seen at northern Ohio although it is at a much lower lati
Andrei [34K]

Answer:

The correct answer is option C. "The magnetic field of earth keeps changing because of the suns activity"

Explanation:

The magnetic field of Earth is not a steady force, and is affected by external forces such as the suns activity, particularly during strong solar/geomagnetic storms. The changes in the magnetic field of Earth explains why the auroras Are sometimes seen at northern Ohio. The auroras are created by energetic electrically charged particles accelerating along the magnetic field, if the location of the magnetic filed changes, the location of the auroras change as well.

6 0
3 years ago
In a genotype such as Bb, what does each letter represent?
-Dominant- [34]

I believe the capital b (B) is refered to as the dominant gene and the lower case b (b) is refered to as the subordinate/recessive gene.

4 0
3 years ago
Evidence supporting E.coli DNA polymerase III having the major role in nucleotide incorporation during replication includes: Evi
kherson [118]

Answer:

All of the above

Explanation:

The DNA polymerase III is a multi-subunit enzyme which is essential for the synthesis and activation of the majority of the genome in Escherichia coli.

DNA replication is random in both prokaryotes and eukaryotes, causing several DNA polymerase to synergistically replicate the continuity (leading) and discrete (lagging) DNA strands.

The points that are given support and reflect the assertions that E.coli DNA polymerase III plays a very important role in nucleotide incorporation during replication.

4 0
3 years ago
Una raza de gallinas, denominada andaluza, presenta plumajes de tres colores negro, blanco y azul. El azul resulta de la combina
Anna007 [38]

Answer:

a) Genotipo: 50% = 1/2 Nn    -     Fenotipo: 50% = 1/2 Plumaje Azul

                     50% = 1/2 NN   -                       50% = 1/2 Plumaje Negro

b) Genotipo: 50% = 2/4 = 1/2 Nn    -     Fenotipo: 50% = 1/2 Plumaje Azul

                     25% = 1/4 NN                                    25% = 1/4 Plumaje Negro

                     25% = 1/4 nn                                     25% = 1/4 Plumaje Blanco

c) Genotipo:  50% = 1/2 Nn    -     Fenotipo: 50% = 1/2 Plumaje Azul

                     50% = 1/2 nn   -                       50% = 1/2 Plumaje Blanco

Explanation:

Datos:

Llamaremos al Gen para color del plumaje: N

Alelo dominante N para color negro

Alelo recesivo n para color blanco

Animales con genotipo homocigota para alelo dominante, NN, expresan plumaje negro

Animales con genotipo homocigota recesivo, nn, expresan plumaje blanco

Animales con genotipo heterozigota, Nn, expresan color azul.

Este es un ejemplo de dominancia incompleta, en la cual ninguno de los dos alelos domina completamente al otro. El alelo dominante, en este caso N, no puede cubrir el efecto del alelo recesivo, n. Los desendientes, entonces, poseen un fenotipo intermedio entre los dos fenotipos parentales, que en este caso es el color azul en el plumaje.

Entonces:

a) Plumaje azul x plumaje negro.

Parental) Nn   x   NN

Gametas) N   n   N   N

Cuadrado de Punnet)   N        n

                             N     NN     Nn

                             N     NN     Nn

F1) 1/2 de la progenie es homocigota dominante, NN, color negro

     1/2 de la progenie es heterocigota, Nn, con plumaje color azul

b) Plumaje azul x plumaje azul.

Parental) Nn   x   Nn

Gametas) N   n   N   n

Cuadrado de Punnet)   N        n

                             N      NN     Nn

                             n      Nn      nn

F1) 1/4 de la progenie es homocigota dominante, NN, color negro

     2/4=1/2 de la progenie es heterocigota, Nn, con plumaje color azul

     1/4 de la progenie es homocigota recesivo, nn, con plumaje blanco

c) Plumaje azul x plumaje blanco

Parental) Nn   x   nn

Gametas) N   n   n   n

Cuadrado de Punnet)   N         n

                             n      Nn        nn

                             n      Nn        nn

F1)  1/2 de la progenie es homocigota recesivo, nn, color blanco

     1/2 de la progenie es heterocigota, Nn, con plumaje color azul

4 0
3 years ago
DNA carries the instructions to make_______.
irina1246 [14]

Answer:

A...PROTEINS........

8 0
3 years ago
Read 2 more answers
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