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3 years ago

Give an example of an external stimulus for a rabbit

1 answer:

8 0

First we have to know what an "internal stimulus" is. An "internal stimulus" is something INSIDE of us, that makes us want to do something. Hunger is an example of an internal stimulus. It comes from within us. And it makes us want to eat. So, since hunger is the stimulus, an appropriate response would be to eat some food. Does that make sense?

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If the green allele is designated as G, and the aurea allele is designated as GA , assign genotypes to the phenotypes listed. Dr

Katyanochek1 [597]

Answer:

in the mutated snapdragon plants, the green leaves started becoming yellow. this conditioned plant is known as, aurea, which has less chlorophyll than green plants.

Crosses had done between various combinations of green and aurea plants and the result was- green x green = all green

aurea x aurea = 2/3 aurea, 1/3 green

green x aurea = 1/2 green, 1/2 aurea

here, the green allele is G, and the aurea allele is GA,

according to the question, in the cross of plants,

the green plants produced all green but some of the crosses of aurea phenotype also gave the green phenotype.

so it can be concluded that the green phenotype (the wild type) came from the recessive allele. No instances of incomplete dominance or codominance were shown.

Thus, the following genotypes would have their phenotypes, as follows:

GG - green

GAGA - aurea

GGA - aurea

5 0

3 years ago

The alkanes in petroleum can be partly separated by

Arte-miy333 [17]

Fractional distillation is the process in which the alkanes in petroleum can be partly separated. This is due to the petroleum having different boiling points. The process starts off with the heating of crude oil for it to vaporize. The vaporized crude oil is then fed into the bottom of the distillation tower. The resulting vapor rises through a vertical column. As the gases rises through the distillation tower, its temperature decreases. Thus, certain hydrocarbons begin to condense and run off at varying levels. Each level-specific condensed fraction contains hydrocarbon molecules that has a similar number of carbon atoms. These "cuts" of boiling point allow numerous hydrocarbons to be separated out in a single process. The cooling of the tower height allows for the separation. Subsequent to the refinement, individual fuels may undergo more refinement to remove existing contaminants or substances so as to improve the quality of the fuel through cracking.

6 0

4 years ago

Insects and lobsters or insects and birds. which are more closely related

aleksandrvk [35]

insects and lobsters

Many insects, including the "Stick Bug" are actually considered to be "Tree Lobsters"

6 0

3 years ago

When the respiratory diaphragm contracts, it flattens, lowering the floor of the thoracic cavity. At the same time, the intercos

Igoryamba

Answer:

1. Increase

2. Decrease

Explanation:

During inspiration, diaphragm contracts and lowers down. There is a simultaneous contraction of external intercostal muscles and movement of rib-cage upward and outward. All these events lead to an increase in the volume of the thoracic cavity. Increase in volume of the thoracic cavity results in expansion of lungs and lowering down the air pressure within alveoli of lungs.

5 0

3 years ago

Can anybody say what phase each letter goes with? I am having a very hard time

ioda

Answer:

A is called Prophase

B is called Anaphase

C is called Metaphase

D is called Telophase

Explanation:

These can get confusing but I'll explain it for you.

The first stage of mitosis is Prophase.

In this stage the chromosomes become visible and the centrioles separate and move to opposite poles of the cell.

The second stage of mitosis is Metaphase.

In this stage the chromosomes line up across the center of the cell and become connected to the spindle fiber at their centromere.

The third stage of mitosis is Anaphase.

In this stage the sister chromatids separate into individual chromosomes and are pulled apart.

The fourth and last stage of mitosis is Telophase.

During this stage the chromosomes gather at opposite ends of the cell and lose their distinct rod-like shapes. Two new nuclear membranes then form around each of the two regions of DNA and the spindle fibers disappear.

The process that follows the last stage of mitosis is called Cytokinesis.

With two complete copies of the DNA now in two different regions of one cell, the cell membrane will pinch and divide the cytoplasm in half. The result is two individual cells that are identical to the original cell. Each of the two new cells have a complete copy of the DNA and contain all of the organelles that the original cell had.

Hopefully, this eases the problem for you and you understand it better.

Also, this image might help:

Let me know if you any other questions about this.

Good luck:)

4 0

4 years ago