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kodGreya [7K]
3 years ago
11

[Giving brain+follow+ty+likes!]

Biology
1 answer:
Nookie1986 [14]3 years ago
3 0

Answer:

Thymine is replaced by uracil

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Chromosome 21 figure D is the result of a process known as________
Softa [21]

Answer:

Chromosome 21 in figure D is the result of a process known as non-disjunction

Explanation:

Meiosis is the process of cell division that serves to obtain gametes, cells with exactly half the chromosome load of the species. This process involves the equal distribution of chromosomes in each daughter cell.

Non-disjunction is an alteration in the separation of the sister chromatids during meiosis, resulting in a gamete with non-separated sister chromatids, which when joined to a normal gamete can produce an organism with an extra chromosome.

In the karyotype shown in the photo, the non-disjunction in chromosome 21 produces a trisomy, a type of aneuploidy seen in Down syndrome.

Learn more:

Trisomy brainly.com/question/484286

8 0
3 years ago
HELP ME i will give brainliest. if the age of the middle layer of a rock sample is between 600 million years and 1 billion years
Zielflug [23.3K]

Answer:

C

Explanation:

it couldnt be A or B

and ya know what people say "if you dont know pick c"

hope this helps

3 0
3 years ago
Which statement most accurately explains how allosteric regulation can change an enzyme's catalytic activity? View Available Hin
Digiron [165]

Answer:

In allosteric inhibition, a regulatory molecule binds to a location other than the active site, resulting in a change in enzyme shape that allows the active site to bind substrate.

Explanation:

Allosteric regulation of an enzyme can be positive or negative, but it always involves effector molecules that bind to non-active site of the enzyme and change its conformation. That site of binding is called allosteric or regulatory site. If the enzyme activity is enhanced effector molecule is called allosteric activator but if the activity is decreased effector molecules are allosteric inhibitors.

5 0
3 years ago
How can pollution reduce the rate of photosynthesis? Research work (60-90 words) unnecessarily,useless answers will be reported
Anna71 [15]

\huge\mathcal\green{answer}

Air pollution has become an extremely serious problem. Air pollutants affect both plants and animals. Under polluted conditions, plants develop different physiological, morphological and anatomical changes. Pollutants cause damage to cuticular waxes by which then they enter the leaves through stomata. This further leads to injury to plants which can be either acute or chronic. Changes in stomata due to air pollutants which seem to be small can be of great consequence with respect to survival of the plant during stress. These effects can further lead to disturbing the water balance of leaf or whole plant. Respiration also gets affected because of the exposure of plants to air pollutants. The present paper deals with the effect of air pollutants on stomata as well as on respiration leading to affect gaseous exchange.

\huge\mathcal\green{hope \: this \: may \: be \: helpful}

\huge\mathfrak\green{mark \: as \: bainliest}

8 0
3 years ago
Cells get rid of waste to sustain the life of the organism.
MrRa [10]
The answer is most likely c
8 0
3 years ago
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