in the dihybrid cross for pea plants shown below, ris dominant for round peas, ris recessive for wrinkled peas, y is dominant for yellow peas, and y is recessive for green peas. a student could accurately make which statements about the offspring of this cross

A. There is a 50% chance of having round, yellow peas

B. There is no chance of having round, yellow peas

C. There is a 100% chance of having round, green peas

D. There is no chance of having any wrinkled, green peas

Answer and Explanation:

a. According to Lamarck, the origin of the long hind legs of the Ord's kangaroo rat is acquired due to extensive use of the muscle legs to jump. Such physical characteristics could be transmitted to future generations. This theory is called Neo-Lamarckism.

b. Darwin, on the other hand, theorized that in a population of Ord's kangaroo rat, there was an individual whose characteristics, long tail and hind legs, had more chances of escaping its predator and, consequently, could survive and reproduce. This theory is called Darwinism.

Answer:

SO2 ==> inorganic compound

Cl2 ==> inorganic elemental molecule

C6H6 ==> organic compound

Explanation:

k=element

SO2=inorganic compound

cl2=inorganic elemental molecule

C6H6=organic compound is your answer.

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Answer:

0.3 cm/s

Explanation:

Answer:

Nutrients

Explanation:

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Answer:

What the scientist is doing incorrectly is disposing of a chemical or biological waste in the common sewer.

Explanation:

One of the most important biosecurity measures is the proper disposal of chemical and biological waste. What the shown scientist is doing incorrectly is disposing of potentially harmful substances in a normal sewer.

The main thing that must be done to maintain a safe laboratory is to perform proper disposal of chemical or biological waste, which must be placed in airtight containers and transported to a location for safe disposal.

Following these procedures is important to avoid chemical or biological contamination of both the environment and people.

Answer:

hope this helps, happy learning

Answer:

Part A: The animals are used for examining and determining the effect of a particular new drug for the treatment of the diseases and disorders before they are examined over humans. This practice is called as clinical trial.

The ethical issue associated with given type of testing is that animals have right to live and survive. They should not be subjected to the treatment where they experience harm or even death.

Part B: Those assigned to the control take a sugar pill. The only thing you want to vary across groups when you're conducting an experiment is the treatment. Since taking pills is a part of taking medication (the treatment), medical experiments often employ something called a placebo-controlled study where outcomes for those who are randomly assigned to take the medication are compared to outcomes for those who are randomly assigned to take a sugar pill. The sugar pill is expected to have no effect, so it serves as a useful baseline to compare the treatment to.

Answer:

The current code of ethics to be upheld in science experiments are as follows: the experiment must contain a clear scientific purpose, the animals must be housed and provided with care, the animals must be legally acquired, the least amount of suffering must be ensured, and the animals can only be used when it is entirely necessary.

In this paragraph, we can see the plan does not fit the code of ethics entirely- because this is a new drug, we can not be sure that this experiment will not be fatal for the animals, and that they will not suffer tremendously before passing on. The medicine should be tested first on a sample which is not living.

Explanation:

Answer:

A

Explanation:

Answer:

but you did not give z

Explanation:

what is z

Answer:

Matter.

Explanation:

Matter is made up of four categories, Solid, Liquid, Gas, and Plasma.

Answer:

Diffusion

Explanation:

hope this helps!

Answer:

1. False

2. True

3. True

4. True

Explanation:

Negative feedback (or balancing feedback) happens when some capacity of the yield of a framework, cycle, or system is taken care of in a way that will in general decrease the variances in the yield, regardless of whether brought about by changes in the input or by different unsettling influences.

Though certain feedback will in general prompt unsteadiness through outstanding development, wavering or disorganized conduct, negative feedback for the most part advances steadiness. Negative feedback will in general elevate a settling to balance, and diminishes the impacts of bothers. Negative feedback loops in which the perfect measure of adjustment is applied with ideal planning can be entirely steady, exact, and responsive.

Answer:

What can be inferred about the function of a selectively permeable organelle is that organelle allows some molecules to pass trough (option C).

Explanation:

Selective permeability is a characteristic, present in the membranes, which allows the passage of some substances and prevents the passage of others, according to their structure.

An example of selective permeability is found in cell membranes, whose hydrophobic nature allows the passage of apolar molecules easily, limiting or preventing the passage of polar molecules and ions.

The other options are not correct because:

    A. Not all molecules can pass through a semi-permeable organelle.

    B. The semipermeable organelle does not prevent the passage of any substance.

    C. Semi-permeable organelle does not allow the passage of large molecules easily.

___________________________________________________________

Answer:

The ecological approach emerged as a reaction to the lab approach, which was considered sanitized and perhaps too controlled. What can happen in a lab cannot necessarily happen outside and vice versa.

___________________________________________________________

Answer:

It depends on the optimum dosage of NPK.

Explanation:

The farmer gain more productivity from that type of fertilizer which have optimum dosage of nitrogen, phosphorus and potassium fertilizers because these three fertilizer needed by the plant in large quantity and having great contribution in the yield of plant so if ''fertilizer a'' has optimum dosage of these three nutrients so we can say that ''fertilizer a'' produces more food as compared to no fertilizer and ''fertilizer b'' whereas if ''fertilizer b'' has optimum dosage of these nutrients so ''fertilizer b'' produces more food.

Answer:

The term that describes the parts of the body with different kindsof cells is organs, which in turn are made up of different tissues.

Explanation:

The cell is the structural and functional unit of all living beings, with the capacity to multiply and unite to form tissues.

Each tissue is a differentiated or specialized structure, formed by groups of cells of the same type, such as muscle, nerve, connective, cartilage and bone tissue, among others.

The specialized tissues in turn form organs, with specific structures and functions, such as muscle, brain and nerves or bones and joints. For this reason, organs are different body parts, formed by different kinds of cells.

Answer:

The DNA is not replicated by the way the cells are used to exist

Heterosporous plants are the ones that produces two different type of spores. Spores can be different in shape and size and that's the name heterosporous. It produces two different shaped spores to differentiate between male and female gametophytes

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Answer:

What the scientist is doing incorrectly is working on a computer console with several monitors, having tubes and flasks of chemicals or biological substances on the same work table, many of which have fallen to the floor breaking and spilling their contents.

Explanation:

In the image it can see that a scientist works with a computer, placed in a long table where there are a lot of flasks and test tubes, many of which contain substances and have fallen to the ground, breaking and perhaps spilling their contents. This is a incorrect practice, as there should be a console for the computer, while the laboratory material should be on separate work tables.

Following these procedures is important to maintain biosafety standards and avoid accidents that affect the work in progress or the health of staff.

Answer:

Please find the explanation of the four possible exceptions to Mendelian genetics below.

Explanation:

Genetics, generally, has to do with how genes are inherited or transferred from parents to offsprings. Gregor Mendel, however, explained this concept in his principles of inheritance called Mendelian genetics. There are, however, exceptions to this mendelian principle called Non-mendelian pattern of inheritance i.e patterns of inheritance that do not follow Mendel's principles. Four of them are explained below:

- Incomplete dominance- This non-mendelian inheritance pattern occurs when one allele of a gene does not completely mask its allelic pair, but instead forms an intermediate phenotype. This is in contrast with Mendelian genetics that proposes complete dominance. For example, a red and white flower produce a pink flower (intermediate).

- Codominance- This is another non-mendelian inheritance where two alleles of a gene are simultaneously expressed. For example, roan cattles is a combination of both red and white hairs.

- Multiple alleles: Some traits in a population are controlled by more than two alleles, as explained in mendelian inheritance. Examples of trait controlled by multiple alleles is height in humans.

- Sex-linked inheritance: Some traits are controlled by genes on sex chromosomes i.e. X and Y chromosomes. This genes exhibit inheritance pattern that are different from Mendel's. Example is haemophilia disease controlled by an affected gene on the X-chromosome.

Answer:

chloroplast

Explanation:

Answer:

__B is the correct option__

Answer:

Answer

take a plant having partially green and white leaves.

Destarch the plant leaves by placing the plant in dark room for three days.

The potted plant then placed in the exposure of sunlight for three days.

pluck the leaf of the plant and allow to boil it in alcohol to remove its green colour.

Answer:

True

Explanation:

Hopefully this helps

Answer:

Sickle cell disease is due to a type of substitution mutation.

Explanation:

Sickle cell disease is a condition that is transmitted from parents to children in an autosomal recessive inheritance pattern. It is due to a mutation that is capable of altering the shape of the erythrocyte, as well as its ability to circulate and carry oxygen.

The mutation that occurs in sickle cell disease is due to an alteration in the β-chain of hemoglobin, caused by the substitution of thymine base by adenine in the DNA that determines it. As a result, valine replaces glutamic acid in the β-chain amino acid sequence, with the consequences described.

Answer:

Built well where water table present nearer to surface.

Explanation:

My advice for them about determining the placement and potential effectiveness of the well is that the well should be installed where the groundwater present nearer to the surface, the reason behind this advice is that minimum work and energy will be used for digging well. If the water table is present very deep, more work and energy will be utilized on the digging of the well. Those areas where more rainfall occurs, the depth of water table is less as compared to arid zones because due to more rainfall more water goes inside the soil and the water table rises.

Answer:

This is not an answer

Explanation: