SCIENCE
ZOOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Sex chromosomes inherited from parents during fertilization
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Temperature of their nest during the incubation period
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The size of the egg and amount of protein present within it
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Time of year that the eggs are laid
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Detailed explanation-1: -TSD is observed in many fish, all crocodilians, many turtles, and lizards. Sex in reptiles is determined by the temperature of the egg halfway through embryogenesis (Crews, 1993).
Detailed explanation-2: -In some species, low temperatures produce mainly females, and high temperatures produce mostly males. Other species show disproportionately high female production at both high and low temperatures, with intermediate temperatures causing mostly male development.
Detailed explanation-3: -The thermosensitive period (TSP; the period when sex is labile) [13] occurs approximately in the middle third of embryonic development. During this time, warmer temperatures produce females, cooler temperatures produce males and a narrow range of temperatures produces both sexes.
Detailed explanation-4: -Research shows that if a turtle’s eggs incubate below 27.7° Celsius (81.86° Fahrenheit), the turtle hatchlings will be male. If the eggs incubate above 31° Celsius (88.8° Fahrenheit), however, the hatchlings will be female.
Detailed explanation-5: -In crocodilians the temperature of egg incubation is the environmental factor determining sex. If the temperature is cool, around 30 °C, the hatchlings are all female. Warmer temperatures, around 34 °C, hatch all males.