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Answer:

It is expected that accessions/lines that exhibit the same bands in SDS-PAGE are phylogenetically similar (or even identical, duplicated, accessions) and therefore they can be removed when developing a core collection of germplasm. Subsequently, the accessions of the core collection can be clustered into subgroups (subpopulations) based on the distances observed between lines, reflected by different protein band patterns observed in SDS-PAGE. It is expected that these subpopulations adequately contain the genetic diversity of the core collection (useful in breeding programs).

Explanation:

SDS-PAGE (sodium dodecyl sulphate–polyacrylamide gel electrophoresis), is a technique widely used in molecular biology to separate proteins based on their molecular weights. In crop improvement programs, this information can result useful to identify accession lines and develop core collections. A core collection is a limited set of lines or accessions/varieties obtained from a large germplasm collection that is expected to contain the genetic diversity of crop species. In this case, cowpea lines that exhibit the same bands in SDS - PAGE are expected to be phylogenetically similar (or even identical/duplicated accessions), thereby these lines can be removed in order to conserve one accession in the core collection. Subsequently, the remaining lines can be classified by a phenogram based on distance measures clustered by UPGMA (unweighted pair group method with arithmetic mean). This cluster analysis enables the construction of a phylogenetic tree from a distance matrix based on protein patterns in SDS-PAGE, thereby obtaining subpopulations (clusters) which will be useful in breeding programs.

Answer:

Deciduous forest

Explanation:

Answer:

what

Explanation:

The core threats to biodiversity are human population growth and unsustainable resource use. To date, the most significant causes of extinctions are habitat loss, introduction of exotic species, and overharvesting. Climate change is predicted to be a significant cause of extinctions in the coming century.

Here are some examples:

1. Human Activities and Loss of Habitat

2. Deforestation

3. Desertification

4. Marine Environment

5. Increasing Wildlife Trade

6. Climate Change

If plant such as an orange or banana tree were grown in a northern state climate, they would require warmer temperatures to survive:

hence, to grow these in northern states, these crops require warmer tempratures and humidity.

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Answer:

The direction of an electric current is by convention the direction in which a positive charge would move. Thus, the current in the external circuit is directed away from the positive terminal and toward the negative terminal of the battery. Electrons would actually move through the wires in the opposite direction.

Conventionally, a positive charge would go in the same direction as an electric current. As a result, the battery's positive terminal receives less current in the external circuit than its negative counterpart. Actually, electrons would go in the reverse direction across the cables.

A stream of charged particles, such as electrons or ions, traveling through an electrical conductor or a vacuum is known as an electric current. The net rate of electric charge flowing through a surface or into a control volume is how it is calculated.

The cell phone, trains, ships, refrigerator, and the motors in appliances like food processors all run on electricity. To be useful, electric energy must be converted into other forms of energy like heat, light, or mechanical.

Conventionally, a positive charge would go in the same direction as an electric current. As a result, the battery's positive terminal receives less current in the external circuit than its negative counterpart.

Thus, a positive charge would go in the same direction as an electric current.

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Answer:

1.) Why does menstruation begin?

A.) Period happens because of changes in hormones in the body. 

2.) How long does the menstrual cycle usually last?

A.) the menstrual cycle lasts 21 to 35 days while bleeding between 2 to 7 days

-TheUnknownScientist

Answer:

a. True

Explanation:

Mitosis is a cellular process where a cell divides into two identical daughter cells. Mitosis is divided into five sequential stages: prophase, prometaphase, metaphase, anaphase, and telophase. During prophase, chromatin condenses into chromosomes, and mitotic spindle fibers start to form from tubulin subunits. Subsequently, during prometaphase, the nuclear membrane disintegrates and spindle fibers attach to the kinetochores of the chromosomes (centromeres). During metaphase, duplicated chromosomes line up along the cell's equator (i.e., the metaphase plate). Subsequently, during anaphase, the kinetochores move toward the cell's poles and sister chromatids separate. Finally, during telophase, kinetochore microtubules of the mitotic spindle disassemble, chromosomes arrive at the poles, the nuclei form at each pole and the chromosomes uncoil.

Bird wings are made of bones and feathers while butterfly wings are made from chitin and are part of the insect’s exoskeleton.

B. They are analogous structures because they share the same function, but not fully the same structural characteristics.

Analogous Structures are:

Thus, option "B" is correct answer.

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Answer:

really!

Explanation:

Answer:

the answer is B

Explanation:

As it releases so does the potassium ions

Answer:

D. 12.50a + 9c + 25

Explanation:

Assuming that the variables:

a = adults

c = children

Set the expression.

Adult tickets cost $12.50 (given): 12.50a

Child tickets cost $9 (given): 9c

"Other expenses" cost a flat sum of 25: +25

12.50a + 9c + 25 is your answer, or D).

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Answer:

1)variation organsimes (within populations) exibit invidiual variation in appearence and behaviour

Explanation:

2) high rate of population growth

3) differential survival and reproduction

Answer:bioprospecting.

Explanation:

just because I got it right

Answer:

Biochemical engineering

Explanation:

It actually got it correct on the exam

Answer: If I'm not mistaking i'm pretty sure its D.

Explanation:

Answer:

DNA

Explanation:

because carries the genetic information copied from DNA in the form of a series of three-base code

I hope this helped you:)

Answer:

dna dont mean to copy but person in top of me is correcto

Explanation:

Answer: Hello, There! your Answers Are Below

in the ocean, algae, phytoplankton and kelp are producers

Explanation:

Hope this helps you!!

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Answer:

Harm to downstream fisheries, due to sedimentation of waterways from increased soil erosion.

Explanation:

Deforestation is the reduction of forest area in a given territory, both because of nature or man-made causes.  It results in the loss of habitats for many animal and plant species, the destruction of natural peoples' habitats and livelihoods, and increases soil erosion and large floods in valleys. Often, a previously forested area becomes waste land.

Answer:

Harm to downstream fisheries, due to sedimentation of waterways from increased soil erosion.

Explanation:

The effects of deforestation include: Harm to downstream fisheries, due to sedimentation of waterways from increased soil erosion.

Answer: Talking

Explanation: Talking is a learned behavior. The others are inherited traits.

Talking trait is a learned behavior rather than an inherited trait.

Using speech is not a personality trait and neither is walking on two feet—virtually all individuals do these activities, and there are almost no individual differences.

Being talkative is associated with being friendly. Talkative people can also be described as chatty, garrulous, loquacious, talky, and likely to talk your ear off. If you don't feel like chatting, you'd better avoid talkative people.

The Talker is creative, articulate, persuasive, charming, enthusiastic, and responds well to challenges, especially when there is recognition and rewards involved.

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Answer:

As the crocodiles stay underwater, its hemoglobin delivers most of the bound O2 as a result of an increased binding of HCO3 to the T conformation.

Explanation:

Crocodiles are the creatures on earth who live on land as well as in water. There are form of reptiles who belong to Phylum Chordata. They eat other animals and hunt their prey mostly hiding themselves in water. They have giant tooth which grabs their prey and kills them instantly.

Answer:

From the given Options, Option  C is correct.

the inheritance of the alleles from each parent is completely random but in a population, there may be natural selective pressure from the environment to favor different levels of expression

Explanation:

The evolutionary basis of human skin color stems far back to the genetic mutations involved in skin pigmentation. Although the diversity of skin color is a characteristic trait of humans, These variants and their evolution reveal that the history of skin color is much older than previously thought.

The evolution of various variations in the human skin color is a result of selective forces which is an environmental factor that favors various levels of expression. Thus, the best option that explains the basis of human skin color in terms of evolutionary trend is Option  C.

Answer: 37. fimbriae. 38. Ductus deferens. 39. Both Cardiac and skeletal muscles. brainliest??

Explanation:

Answer:

Explanation:

Cyanoacrylate or super glue fuming is used to develop latent fingerprints and make them visible.Fingerprint powders, however, adhere to the sweat and therefore the powders have a difficult time adhering to only the amino acids, proteins and fatty acids.

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Answer:

The doctor can mix a blood sample from the hemophiliac patient with David's blood.

Explanation:

This test is called Mixture Test and is performed quickly when there is no time to do more detailed and accurate tests. In the mixture text, two blood samples are mixed, where one is from a patient with hemophilia. when mixing the two samples, the doctor observes whether there were coagulation inhibitors in the patient's blood, and can then draw conclusions about the presence of hemophilia in the patient.

Answer:

D

Explanation:

When the animals eat the food it's converted into energy