Overeating and weight gain in rats result from either ________ or _______

Data was collected concerning Galapagos bird beak size over time. There are several species finches, and they are also known as

astra-53 [7]

Finches adapt to the new conditions such as drought by changing the size, shape and depth of their beaks. Beak morphology varies according to drought conditions. Since after the drought, vegetation dries out and the hard, big, tough seeds remain, only the finches with deep beaks will survive. Finches adapt via their beaks to different foods sources and different local conditions.

4 0

3 years ago

Read 2 more answers

¿Qué áreas del conocimiento me pueden <br> aportar a la ejecución del proyecto? para un huerto

tensa zangetsu [6.8K]

Answer:

Conocimientos que pueden resultar muy útiles al momento de planificar un huerto:

- biología vegetal (características de las plantas que queremos producir)

- agronomía (características del terreno utilizado)

- condiciones ambientales (meteorología), como así también la disposición del lugar

Explanation:

Para iniciar un huerto en casa es necesario tener en cuenta una serie de factores que pueden influenciar en gran medida el éxito del proyecto:

-Tener en cuenta las características de las plantas que queremos producir es fundamental para lograr un óptimo crecimento. Por ejemplo, plantas que no resisten las heladas podrían morir en ciertas regiones, con lo cual las plantas deberían encontrarse en estos casos protegidas durante su desarrollo (por ejemplo, mediante un invernáculo).

- Buscar lugares bien iluminados. La presencia de luz es un factor fundamental para el crecimiento de las plantas.

- Riego y/o precipitaciones: tener en cuenta las necesidades hídricas de las plantas que queremos producir.

- Suelo: utilizar tierra abonada suele ser la mejor opción para brindarle a las plantas la mayor cantidad de nutrientes y así garantizar un óptimo crecimiento. En el caso de usar macetas, la presencia de huecos o el uso de vermiculita puede ser de gran ayuda para permitir la escorrentia del agua.

- Espacio: es necesario tener en cuenta el espaciado entre plantas para que puedan crecer normalmente.

-Tener en cuenta las plagas (insectos, nemátodos, etc) que podrían afectar el crecimiento de las plantas.

4 0

2 years ago

The relative location of four genes on a chromosome can be mapped from the following data on crossover frequencies Genes B and D

kykrilka [37]

Answer:

3. CABD

Explanation:

The gene mapping refers to providing position to the genes on the chromosomes. The first gene map was constructed by the Alfred Sturtevant on the basis of recombinant produces or recombination frequency which was calculated.

The gene mapping refers to providing position to the genes on the chromosomes.

In the given question to construct gene map:

1. Look for the highest recombination frequency that is 50% between the C and D.

2. Now look for second-highest value and place the gene accordingly.

3.Similarly, place the genes in the decreasing order of recombination frequency and this will result that the sequence of the genes is- CABD.

Thus, Option-3 is correct.

5 0

3 years ago

In the 1600s, william harvey studied reproduction and development. what is the term given to the theory which states that an org

alexdok [17]

<span>Epigenesis is the term which says that an organism develops from the fertilized egg by a succession of developmental events that leads to an adult. This theory was first published by Aristotle. It became a well established and accepted theory in the late 18th century.</span>

4 0

3 years ago

Before oxgyen is picked up in the lungs by hemoglobin, it first diffuses through (a) alveolar cells, (b) blood plasma, (c) red b

kherson [118]

<h2>a,d,b,c is the correct order</h2>

Explanation:

Before oxygen is picked up in the lungs by hemoglobin, it first diffuses through (a) alveolar cells,d) capillary walls (b) blood plasma, (c) red blood cell plasma membranes

Although oxygen dissolves in blood, only a small amount of oxygen is transported this way,1.5 percent of oxygen in the blood is dissolved directly into the blood itself and most oxygen—98.5 percent—is bound to a protein called hemoglobin and carried to the tissues
Hemoglobin (Hb) is a protein molecule found in red blood cells (erythrocytes) made of four subunits: two alpha subunits and two beta subunits
Each subunit surrounds a central heme group that contains iron and binds one oxygen molecule, allowing each hemoglobin molecule to bind four oxygen molecules
Molecules with more oxygen bound to the heme groups are brighter red because of which oxygenated arterial blood where the Hb is carrying four oxygen molecules is bright red, while venous blood that is deoxygenated is darker red
At the same time, carbon dioxide that is dissolved in the blood comes out of the capillaries back into the air sacs, ready to be breathed out
Oxygenated blood travels from the lungs through the pulmonary veins and into the left side of the heart, which pumps the blood to the rest of the body
Oxygen-deficient, carbon dioxide-rich blood returns to the right side of the heart through two large veins, the superior vena cava and the inferior vena cava
Then the blood is pumped through the pulmonary artery to the lungs, where it picks up oxygen and releases carbon dioxide

6 0

3 years ago

Overeating and weight gain in rats result from either ________ or ________.

Overeating and weight gain in rats result from either or .