Answer:
The correct answer would be Y-chromosome analysis.
Y-chromosome analysis is technique used to search the parental line of a boy on his father's side.
Gender of a person is determined by 
chromosome in humans. XX is present in females and XY is present in males.
Mother always passes X chromosome to her progeny but father passes both X and Y chromosomes. If X is passed from the father then the offspring will be a girl and if Y is passed from the father then the offspring will be the son.
The sons (F₂) of this son (F₁) will also bear the same Y chromosome as that of grand father (P).
Thus, Y chromosome always passes from father to son and hence, Y-chromosome analysis can help in identification of father of this young boy.
Answer:
In most eukaryotes, the nuclear envelope fragments, but in diatoms and dinoflagellates, it remains intact.
Explanation:
Well, what happened was that you had populations of dog-wolves that became isolated from the greater wolf population and in doing so, they began to breed more closely—to inbreed as it were. And when you inbreed, you get genetic peculiarities that arise, and those peculiarities then begin to become part of the population…. In other words, a mutation will appear in a small population.
The epididymis region of the testis do they remain.
<h3>What about epididymis?</h3>
- Each testis has a little, tightly coiled tube linked to it (the male sex glands that produce sperm).
- Male reproductive cells known as sperm travel from the testicles into the epididymis, where they mature and are then stored.
- The epididymis' most obvious job is to move sperm from the rete testes to the vas deferens.
- The immature sperm from the testis is received by the tortuously coiled epididymis, which stores it for several days.
- Sperm is forcibly discharged into the deferent duct during ejaculation from the epididymis' tail.
- Sperm is transported from the testes and stored in the long, coiled epididymis.
- It is seen as a curving structure on each testis' posterior (rear) edge. There are three parts to it.
Learn more about epididymis here:
brainly.com/question/1497276
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