FORESTRY
GENETICS TREE IMPROVEMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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are a result of the uniting of a male and a female gamete
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have cells that contain DNA found only in the female shark
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are considered to be a different species from the male parent
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have cells that contain genetic information from both parents
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Detailed explanation-1: -A hammerhead shark that gave birth in a Nebraska aquarium reproduced without mating, a genetic analysis shows. This form of asexual reproduction, called parthenogenesis, has been found in other vertebrate species, including some snakes and lizards.
Detailed explanation-2: -Hammerhead sharks are viviparous: they retain fertilized eggs within the body and give birth to live young-from 2 to 42. Smaller species produce just a few young, whereas the great hammerhead will give birth to several dozen.
Detailed explanation-3: -A female hammerhead shark has given birth without mating with a male and its offspring has no paternal DNA. This is the first scientific report of asexual reproduction in sharks. Female sharks can reproduce without having sex, scientists have found.