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Verizon [17]
3 years ago
11

Please help I'll give brainliest ​

Biology
2 answers:
Vesnalui [34]3 years ago
7 0

The second option: meiosis and fertilization

process A is meiosis, you can see that the gamete(haploid cell) results from the diploid cell. The gamete has n chromosomes(39), whereas the diploid cell has 2n(78)

process B is fertilization the two gametes(haploid) fuse together to form the zygote(diploid)

Aneli [31]3 years ago
4 0

Explanation:

Process A allows the chromosome number in the dog cells to be reduced by half. This is only possible due to meiosis as it undergoes 2 phases of meiosis/cell division which is meiosis I and II. (From 2n to 4n to 2n to n)

(After mitosis, the chromosome number will remain constant even though DNA replication occured in S phase, as there is only 1 phase of mitosis/cell division, so from 2n to 4n back to 2n)

Process B allows the dog gamete cells to undergo fertilization and produce a zygote, therefore the chromosome number returns back to 2n.

(Pollination only occurs in plants, not in animals such as dogs and humans)

The correct answer is Meiosis and Fertilization.

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Tissues are a group of specialised cells with a common structure, origin and function. For example - epithelial tissue, nervous tissue, muscle tissue.

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<h3>Hope This Helps You ❤️</h3>
4 0
2 years ago
In a double-blind procedure, knowledge about whether a drug or a placebo is being administered is withheld from __________.
vagabundo [1.1K]
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3 years ago
Scientists studied isolated cells at various stages of the cell cycle and found that some cells have 1.5 times more DNA than the
Makovka662 [10]

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4 0
3 years ago
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What type of genetic disorder is leber hereditary optic neuropathy
ivanzaharov [21]

Answer:

Mitochondrial Disorder

Explanation:

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The most of the individuals with LHON do not possess the signs of the disorder. The disorder is caused by mutation in maternal DNA, thus it is a type of mitochondrial disorder.

7 0
3 years ago
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