A researcher has a laboratory strain of flies that have loss-of-function mutations in both gene X and white. These flies are used as hosts for P element transformation: Embryos of the double mutant strain are injected with two plasmids, one containing a wild-type copy of the white gene (w+) and a wild-type copy of gene X, side-by-side within P element inverted repeats, and the other plasmid containing only the P element transposase gene. Transgenic offspring of the injected flies will
Select one:
a. have both plasmids integrated randomly into the genome.
b. have white eyes and express transposase.
c. have red eyes and a wild-type copy of gene X in place of the mutant copy in their genome.
d. have red eyes and a wild-type copy of gene X integrated into a random location in the genome.

Answers

Answer 1

Answer:

d. have red eyes and a wild-type copy of gene X integrated into a random location in the genome.

Explanation:

P elements are genetic mobile elements, i.e., transposons, which are highly mobile in the Drosophila germline. These transposons naturally cause a high rate of mutation in Drosophila germline cells resulted from an interstrain cross of males with autonomous P elements and females without P elements, a phenomenon known as hybrid dysgenesis. Moreover, a transposase in an enzyme required for the mechanism of transposition (in this case, to mediate the transposition of P elements which are reinserted randomly). The P elements have provided a useful mutagenesis system widely used in molecular biology and genetics research. In fly transformation, it is required to use plasmids with a P element (P plasmids) which contains a w+ (red-eye) marker and recognition sequences for the transposase. In this case, the embryos injected with P plasmids will contain all the components to insert the reporter gene (red-eye marker) and the wild-type copy of gene X into a random site of the genome.


Related Questions


How are chloroplasts different from mitochondria?
a. Mitochondria need light to create energy
b. Mitochondria is the powerhouse of only plant cells
C. Chloroplasts create energy in animal cells
d. Chloroplasts are only found in plant cells

Answers

Answer:D. Mitochondria are the "powerhouses" of the cell, breaking down fuel molecules and capturing energy in cellular respiration. Chloroplasts are found in plants and algae. They're responsible for capturing light energy to make sugars in photosynthesis.
D. Animal cells don’t have chloroplast because they don’t need it

Without feedback, what would happen to a person's height?

HELP ASAP PLZ

Answers

Answer:

nothing would happen to a persons height, it depends if they're still growing because of there age

Explanation:

I’m sure as the person got older they can get shorter when they are hitting their 30s or so and when they are growing into their body they can get taller

PLEASE ANWSER CORRECT AND ASAPPL

Answers

Answer: B. Mostly nitrogen, carbon dioxide, water vapor.

Which ingredient is a food acid used to activate baking
soda in quick breads?
o honey
o buttermilk

Answers

Answer:

Honey

Explanation:

Technically it could be both, as they can both be acidic, but honey is lower on the pH scale, meaning it is more acidic and thus will have a larger chemical reaction with baking soda.

Which number would show a Full Moon while on the surface of Earth looking up?

Answers

I believe the answer is C.

What are synthetic materials?

Answers

Answer:

synthetic materials are not naturally occurring. some examples are motor oil, technetium Te, the element on the periodic table, and plastic

mendel cross between yellow seed YY with green seed yy the F1 result will be . 1.all YY.
2.half YY and yy.
3.all Yy.
4.all yy​

Answers

Answer: All Yy

Explanation: If you do the cross it comes out with 4 Yy’s.

Which two elements have the most similar chemical properties?

aluminum and barium

nickel and phosphorus

chlorine and sulfur

sodium and potassium

Answers

the answer is sodium and potassium

Giving brainlist to whoever answers

Answers

Answer:

At the bottom of the food chain, the herbage, are the producers. All the other organisms above the producer are consumers. In economics, the food chain is the series of processes by which we grow, sell, and eventually consume food. This article focuses on the term when it refers to organisms that depend on each other as a source of food.

Explanation:

Answer:

heterotroph

Explanation:

what classes of food is onions​

Answers

Answer:

vegetable

Explanation:

Vegetable is the right answer

How is energy and matter conserved?

Matter and energy can be created into different forms.
Matter and energy can be changed into different forms.
Matter and energy can only be stored in fossils.
Matter and energy can be destroyed only by combustion.

Answers

I think the answer is B.

Energy and matter are conserved as they can be changed into different forms. This is known as Law of conservation.

What is the Law of conservation of energy and matter ?

The law of conservation of matter and energy states that matter/energy is neither created nor destroyed but can only be transformed from one form to another.

When wood burns, the mass of the soot, ashes, and gases equals the original mass of the charcoal and the oxygen when it first reacted. This proves the law of conservation of mass. In a torch, the chemical energy of the batteries is converted into electrical energy, which is converted into light and heat energy. This proves the law of conservation of energy.

To know more about Law of conservation here

https://brainly.com/question/9391940

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I-
ehehehehehehehehehehehehe​

Answers

Answer:

LOL

Explanation:

pls answer pls please​

Answers

Answer:

1.it's beak is pointed and  slightly curved at pointed

2.it's upper part is brown and lower part is white

3.it's legs is black

Explanation:

What is a phenotype?

Two alleles are different

The alleles an organism carries in its
genome, set of alleles.

The characteristics you can see in an organism. Physical appearance, personality, talents, weaknesses, etc

Two alleles that are the same.

Answers

Answer:

phenotype refers to the observable characteristics of an organism

In the North Sea, eel feed on kelp, and herring feed on eels. Assuming that North Sea fishermen overfish (catch too many) herring to the point that their population greatly decreases, what is the most likely result on the eel and kelp populations?

A.
Eel population will increase while kelp will decrease.

B.
Eel and kelp populations will both increase.

C.
Eel population will decrease while kelp will remain the same.

D.
Eel and kelp populations will both decrease.

Answers

Answer:

the correct answer is C just took the test

Explanation:

A. Eel population will increase while keeping will decrease

How do invisible things such as sound and Wi-Fi internet travel from place to place?​

Answers

They travel through Wave pattern

The things such as sound and Wi-Fi internet travel from place to place as radio waves.

What are radio waves?

Radio waves are the electromagnetic waves that have the highest wavelength. The range of radio waves is from a thousand meters to 30 centimeters. These waves are used for T.V., mobile phones, etc.

Thus, the traveling technique for sound and Wi-Fi internet is radio waves.

Learn more about radio waves

https://brainly.com/question/13989450

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Name three reasons why the atmosphere is important to life on earth and explain your reasoning.

Answers

The atmosphere ensures that all living things can carry out daily processes that are vital to survival, such as breathing. Photosynthesis, for example, could not be possible without an atmosphere, because all of the gasses in our atmosphere stay there due to Earth's gravity.

The atmosphere is vital because it plays a role in the water cycle as well, allowing rain to keep falling and giving life-giving water to organisms that need it.

Life would not be possible without an atmosphere on this planet, along with other vital things, like gravity, sunlight, and water.

HELPPp!!!!!!I’ll mark u brainly

Answers

Answer:

Genotypes - Phenotypes:

TT - Thin

Tt - Thin

tt - Wide upside down

LL - Lopsided

Ll - Lopsided

ll - Parallel

VV - Vertical

Vv - Veritcal

vv - Horizontal

PP - Pink

Pp - Pink

pp - Red

Which convinces scientists that current warming trends are not solely part of earth’s natural cycle

Answers

it is warming faster than previous natural cycles.

Trade winds blow from the horse latitudes toward the______.
equator
the tropics
the poles

Answers

Answer:

equator

Explanation:

hope u get it right

Answer:

they blow from the east and the west to the south end north of the equator.

Explanation:

they help ships travel west and they can they can also steer storms like hurricanes too

Long-term mineral extraction has no lasting consequences.

Answers

Answer:

False

Explanation:

There has a been decrease in the diversity of plants in the grasslands of the Edward's plateau. What has caused this to occur?

Answers

What the person above me said is correct!!! Good luck! Have a good day!

Is a bird calls warning for prey a physical or behavioral adaptation?
Is an animals body temperature changing a physical or behavioral adaptation?
Is birds flying to high ground when they sense movement a physical or behavioral adaptation?

NO LINKS! NO PDF'S. Please, help ASAP!

Answers

1. the birds call is a behavioral adaptation 2. the animals body temp changing is physical. 3. the birds flying is a behavioral adaptation.

Select the correct answer.
Many farmers in United States rear animals for their meat and wool. The animals remain in confined spaces and feed on grains. Farmers give
growth hormones to these animals to hasten and increase their growth. Which type of farming are these farmers practicing?
OA. traditional livestock ranching
OB
modern livestock ranching
Ос. .
sedentary tillage
OD
nomadic herding

Answers

Answer:

D nomadic herding

Explanation:

I believe this is the correct answer

a scientific ________ is based on the results of numerous experiments.

Answers

Answer:theor

Explanation:

b

For decades, scientists relied on the fossil record and comparative anatomy to assemble evolutionary lineages. Which statement describes a limitation of these methods? (1 point) They are no longer relevant because the fossil record is complete. They can show false relationships between organisms that are not reflected in the DNA. They are not reliable evidence of how the body structures of organisms evolved. They cannot be used to determine when species evolved.

Answers

Answer: They can show false relationships between organisms that are not reflected in the DNA

Explanation:

Okay so there is a thing called "convergent evolution" which basically means that different species coming from different evolutionary lines evolve the same traits. It's really easy to mistake convergent evolution for evolutionary similarities. From the fossil record, it's easy to see the bones of one animal and to see that they are similar to another but that doesn't prove that they are related because it's often due to convergent evolution.

They can offer false relationships between organisms that are not reflected in the DNA. Also, they don't prove they are related due to convergent evolution.

What is DNA?

There is a thing called "convergent evolution" which essentially suggests that additional species coming from different evolutionary strings become the same traits.

It's really easy to misunderstand convergent evolution for evolutionary parallels.

From the fossil record, it's easy to catch the bones of one animal and to see that they are equal to another but that doesn't confirm that they are connected because it's often due to concurrent evolution.

Find more information about DNA here:

https://brainly.com/question/8806489

Please help me I will mark BRAINLIEST

Answers

Answer:

an available kind of foods

Explanation:

While investigating applications of science knowledge, Willy learned that scientists have used genetic engineering techniques to attach insulin-producing genes to bacterial DNA. These bacteria produce large amounts of scarce human hormones. Scientists predict that hormones produced by bacteria will be inexpensive and will not cause allergic reactions. (SC.7.N.1.5) Scientists developed hormone-producing bacteria because they wanted to

Answers

Answer:

develop methodologies to increase the production of hormones for human use

Explanation:

Genetic engineering refers to the manipulation of an organism's genes by using recombinant DNA (rDNA) techniques in order to develop biotechnological and biomedical applications. For this purpose, genetically engineered bacteria carrying recombinant human genes can be used for producing human hormones. For example, recombinant human insulin can be produced by using Escherichia coli strains, and this hormone can then be purified as genetically engineered bacteria grow in order to treat diabetic patients. For this purpose, a bacterial plasmid (i.e., an independent fragment of circular bacterial DNA) is cut with restriction enzymes and then the human gene encoding the hormone of interest is inserted into the plasmid. Finally, the genetically modified plasmid may be readily transferred to the bacterial chromosome and thus increase the supply of the hormone of interest for its use by humans.

what is cell wall. ASAP. please​

Answers

Answer:

A cell wall is a structural layer surrounding

of plant cells, just outside the cell membrane. It can be tough, flexible, and sometimes rigid. It provides the cell with both structural support and protection, and also acts as a filtering mechanism

Answer:

A cell wall is a structural layer surrounding some types of cells, just outside the cell membrane. It can be tough, flexible, and sometimes rigid.

Explanation:

18. Refraction is caused by
a) Waves encountering a gap
b) More than one reflection
c) Displaced images
d) Changing waves speeds at a boundary

Answers

Explanation:

Option D is the correct option.

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