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Answer:

it's true

I hope it's helps you

Yes, it's true. Chromosal sex is currently determined through the chromosal combination.

Answer:

bacteria

Explanation:

Answer:

Mitosis:

A single division occurs, separating sister chromatids

End result is two diploid cells that are genetically identical to each other and the parent cell

Meiosis:

The first division separates homologous pairs; the second division separates sister chromatids

Homologous chromosomes pair up and form chiasmata

Homologous pairs of chromosomes line up on the metaphase plate

Daughter cells contain recombinant chromosomes

End result is four haploid cells that are genetically different from each other and the parent cell  

Mitosis and Meiosis:

Chromosomes duplicate during interphase

Process starts with a diploid cell

Duplicated chromosomes line up Individually on the metaphase plate in a diploid cell

Explanation:

Mitosis is the division of vegetative cells while meiosis involves the division of sex cells. Both divisions start with diploid parental cells but while the daughter cells in mitosis are also diploid, those of meiosis are haploid. This is why mitosis is referred to as equational division while meiosis is known as reductional division.

A cell that will undergo mitosis or meiosis would first have its genetic materials duplicated during interphase in addition to the synthesis of other important biochemicals such as proteins. Mitosis involves just a single division of the sister chromatids with two genetically identical daughter cells who are also clones of the parent cells resulting.  

Meiosis, on the other hand, involves two divisions - the first one happens to separate homologous chromosome pairs while the second division separates sister chromatids just like in mitosis.  During the early stage of meiosis, homologous chromosomes synapsed through the formation of a synaptonemal complex to form tetrads. Thereafter, synapsed chromosomes exchange chromosomal segments at a point known as chiasmata. All these happen at the prophase stage of meiosis I. The paired homologous chromosomes are then lined up at metaphase where they are engaged by the spindle fibers.

Meiosis II and mitosis are more or less the same with the chromosomes condensing at the prophase and the formation of metaphase plates at the metaphase. Sister chromatids are pulled apart and they migrate to the opposite poles at the anaphase and telophase.

Answer:

The correct answer is - deuterostomes.

Explanation:

Duetorstomes eggs ,During embryonic development the zygote undergoes cleavage. Cleavage results is slitting into multiple cells where ease cell has the ability to develop into a complete embryo when isolated.

Answer:

TAGGCTTCAGGCTC

Explanation:

The complementary base of Adenine is Thymine in a DNA strand but it is Uracil if it's a Mrna strand

then the complementary base of cytosine is therefore guanine

Answer:

Gas exchange is the intake of oxygen and the excretion of carbon dioxide at the lung surface. Oxygen moves into the blood and carbon dioxide moves out of the blood. Cell respiration is the process that releases energy from the food

Answer:

they need food for survival

Answer:

Fusion or pairing does not occur.

Explanation:

Inversions mutation leads to lowered fertility due to production of unbalanced gametes in the meiosis cell division. Chromosome inversions have no effect on mitosis, but they has affect meiosis because inversions changes the gametes which is only present in meiosis. If an inversion present is in the heterozygous condition, pairing of chromosomes cannot occur in a simple linear fashion due to change of sizes. But if the inverted chromosome segment has the proper size so it can paired with each other.

Answer:

The gravitational acceleration in the surface of the moon is 1.63 m/s^2

Explanation:

The gravitational acceleration at a distance R of an object of mass M, is given by:

g = G*M/R^2

Where:

G is the gravitational constant.

G = 6.67*10^(-11) m^3/(kg*s^2)

We could think that all the mass of the moon is at its center, then at the surface of the moon, the distance will be equal to the radius of the moon, thus:

R = 1740km

But we want to work with meters, so remember that:

1km = 1000m

then:

1740km = (1740)*1000m = 1740000m

R =  1740000m

And the mass is just:

M = 7.4x10^22 kg

If we input all that in the gravitational acceleration equation, we get:

g = (6.67*10^(-11) m^3/(kg*s^2))*(7.4x10^22 kg)/( 1740000m)^2

g = 1.63 m/s^2

The gravitational acceleration in the surface of the moon is 1.63 m/s^2

Answer:

Ecological succession

Explanation:

In ecology, ecological succession is described as a series of change in the structure or composition of an ecological community over a period of time. There are two types of ecological succession namely: primary succession and secondary succession.

Primary succession occurs on a barren land with no prior growth while secondary succession occurs in an area that has been colonized before but disturbed by an environmental hazard.

Answer:is A.is manipulated by the scientist.

Explanation:

Answer:

The correct answer is ''sporophyte and a gametophyte''

Explanation:

Plants have a diplohaplon life cycle: a haploid adult plant, called a gametophyte, and a diploid adult plant, called a sporophyte. In green algae, the two generations, sporophyte and gametophyte, are independent and generally the same size. This type of life cycle is found not only in many multicellular green algae, but also in brown algae and red algae. In vascular seedless plants, including ferns, gametophytes, although still independent, are smaller in size than sporophytes. In seed plants, the gametophytic generation is further reduced and is totally dependent on the sporophyte.

What you want say?????

which language is this?

Answer:

2

Explanation:

aritieries have thick,elastic walls to accommodate the high pressure of blood pumped from the heart

Answer:

should be G) all of the above

Explanation:

health class and quick double check to a reliable source

The correct option is, (g) All of the above.

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Answer:

B. Point D

Explanation:

I just took the quiz

In the given image, on point D, it is not possible to have any plant. The correct option is B.

To grow plants require enough sunlight, carbon dioxide and water. By using all these, plant perform photosynthesis by which it can survive.

As point D in the given image has no light sources, as sunlight cannot penetrate deep into the water, it is impossible to have growing plants here.

Thus, the correct option is B.

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Answer:

Answer:important to record all data and procedures because if we list that data then we can see that which we record

hope this will help you

Answer:

Good record keeping can help user to track errors or refine an experiment.

Records can be used to audit or to check data integrity

False

Although I am answering based on my recollection, I am sorry if I am wrong.

Ethyl methane sulfonate is a chemical mutagen that modifies bases in DNA. This agent causes C to be mutated to T

May i know the complete sentence?

Answer:

b. only meiosis results in a reduction in chromosome number

Explanation:

Select the group of body systems responsible for energy supply and fluid balance.

d. Urinary, Digestive, Respiratory

The shift in molecular biology is the genetic change of the cell resulting from the direct absorption and integration of the dna material rebusied external oxygen from its surroundings and its intake through the cell membrane. Transformation occurs naturally in some types of bacteria, but artificial means can also be affected in other cells

Hope it helps

Answer:

The correct answer is - D) 1000x.

Explanation:

pH is a logarithmic scale, 1 reading change leads to the results in ten-fold in the   H+ concentration in acidity/basicity. The more  H +  ions found in solution, the more acidic the substance is as acids donate  H +  ions.  

You can calculate the concentration of  H +  from the pH and the equation  

p H  = − log [ H + ]

arrange again

[ H + ]  =  10 − p H

So for a pH of 8, we get  [ H + ]  = 10 ^− 8

For a pH of 5, we get  [ H + ] = 10^ − 5

 10 ^−5  /10 ^− 8= 10 ^3

=  1000

Answer:

cryosphere → glaciers, ice caps, ice bergs

atmosphere → air surrounding earth

biosphere → all of Earth's living things

geosphere → Earth's interior, rocks, minerals, and landforms

hydrosphere → oceans, lakes, rivers, streams, and groundwater

Explanation:

The above are properly matched.

Cryosphere is known as part of the earth were water is in solid form. This has to do with glaciers, ice, ice bergs, etc.

Atmosphere has to do with the part of the earth that is gaseous. This has to do with the air found on earth.

Biosphere is the living part of the earth. All things are found in the biosphere.

Geosphere is known to be earth itself which is made up of the landforms, rocks, minerals, earth's interior, etc.

Hydrosphere has to do with the liquid part of the earth. It has to do with the water bodies.

Answer:

The mind is like a: filing cabinet.

Explanation:

Answer:

Man (dimples and freckles) - FfDd

Woman (no dimples and no freckles) - ffdd

Child (no dimples and no freckles) - ffdd

Explanation:

According to this question, the possession of freckles (F) and dimples (D) are the dominant traits. The union of a man with dimples and freckles and a woman with no dimples and freckles (ffdd) gave rise to a child that has no dimples or freckles (ffdd).

Since the child has a recessive 'ffdd' genotype, it means that the father will likely have a heterozygous genotype (FfDd). Therefore, the genotypes of the three persons involved are;

- Man (dimples and freckles) - FfDd

- Woman (no dimples and no freckles) - ffdd

- Child (no dimples and no freckles) - ffdd