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Effectus [21]
3 years ago
6

If cell cycle regulation is altered, what might be the consequence?

Biology
1 answer:
denpristay [2]3 years ago
6 0
Cancer is the result of unchecked cell division caused by a breakdown of the mechanisms that regulate the cell cycle. The loss of control begins with a change in the DNA sequence of a gene that codes for one of the regulatory molecules. Faulty instructions lead to a protein that does not function as it should
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En un cruce entre peces naranjas y peces grises se obtiene una generación (f1) de 50% peces grises . Realice el cruce y explique
Ilya [14]

Answer:

Uno de los progenitores es heterocigoto para color naranja (Nn) y el otro parental es homocigoto recesivo para gris (nn). Al haber una cruza entre un homocigoto recesivo y un heterocigoto, la 50% de la progenie expresa color naranja (Nn), mientras que el otro 50% expresa color gris (nn).

Explanation:

<u>Datos disponibles:</u>

  • Cruce entre peces naranjas y peces grises
  • 50% de la F1 son peces grises
  • Naranja dominante sobre gris

Podemos nombrar el alelo dominante para color naranja <em>N</em>, y al alelo recesivo  para color gris <em>n</em>.

Para que en un cruce entre dos fenotipos distintos, el 50% de la primer camada exprese uno de estos fenotipos, entonces uno de los parentales debe ser heterocigoto, mientras que el otro parental debe ser homocigoto recesivo. De esta forma 50% de la primera generación expresara uno de los fenotipos, mientras que el otro 50% expresará el otro fenotipo.

Supongamos que uno de los parentales lleva el genotipo <em>Nn</em>, y el otro parental es <em>nn</em>.

Cruce:

Parental)      Nn    x     nn

Gametas)   N    n       n    n

Fenotipos) Naranja     Gris

Cuadro de Punnett)      N           n

                            n       Nn         nn

                            n       Nn         nn

F1)  2/4 = 1/2 = 50% de la progenie tendrá genotipo heterocigoto, Nn

     2/4 = 1/2 = 50% de la progenie tendrá genotipo homocigota recesivo,    

     nn

     50% de la progenie será color naranja (Nn)

     50% de la progenie será color gris (nn)

               

3 0
3 years ago
(BRAILIIEST) Can someboody halp me with this
Helen [10]

Answer:

The answer you are looking for is B. The gravitational pull of the moon

Explanation:

The moon influences tides the most. The moon's gravitational pull on the earth is strong enough to tug the oceans into bulge

6 0
3 years ago
Read 2 more answers
What type of charge does each atomic particle have?<br> Proton<br> Neutron<br> Election)
nadya68 [22]
Answer:

Proton has a positive charge.
Neutron has a neutral or no charge.
Electron has a negative charge

Explanation:

Trust me
3 0
3 years ago
Which of the following environmental changes is most difficult to survive?
BlackZzzverrR [31]

Answer:

I'm thinking the answer would be C if not then it would be B

Explanation:

7 0
3 years ago
The typical size of a bacterium is <br> A. 1 nm<br> B. 10 nm<br> C. 1000 nm<br> D. 1 km
mestny [16]

Answer: 1000 nm

Explanation:

Bacteria are the type of biological cell. They constitute a large domain as they are found every where on the earth.

These are few micrometer in length which means 200-700nm . It depends on the type of the bacterial cell. The bacteria are the first organism that appeared on earth.

They are found in water, on land, desert, hydro thermal vent, snow et cetera. These are variable in shape.

5 0
4 years ago
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