Animal Sex Determination

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Questions and Answers

What determines the sex of human babies?

  • The father's chromosomes
  • A combination of the mother and father's chromosomes (correct)
  • The mother's chromosomes
  • The temperature of the environment

Which animal has a haplodiploid system where males only have one copy of every gene and do not have a father?

  • Ants (correct)
  • Birds
  • Whiptail lizards
  • Turtles

What determines the sex of human babies?

  • The temperature
  • The mother's chromosome
  • The location of the larva
  • The father's chromosome (correct)

What is the sex determination system of ants?

<p>They have a haplodiploid system (B)</p> Signup and view all the answers

What determines the sex of alligators and turtles?

<p>Temperature (D)</p> Signup and view all the answers

What determines the sex of whiptail lizards?

<p>Cloning (D)</p> Signup and view all the answers

What is the sex determination system of whiptail lizards?

<p>They are a nearly all-female species that lay eggs that hatch into female clones of themselves (B)</p> Signup and view all the answers

What determines the sex of Green spoonworms?

<p>Landing spot on the sea floor (D)</p> Signup and view all the answers

How is sex determined in green spoonworms?

<p>By the location where the larva lands on the sea floor (D)</p> Signup and view all the answers

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Study Notes

  • The sex of human babies is determined by a 50/50 chance through the XY chromosome system.
  • Other animals have different sex determination systems such as birds and some reptiles where sex is determined by the mother's Z or W chromosome.
  • Ants have a haplodiploid system where males only have one copy of every gene and do not have a father.
  • Some animals like alligators and turtles have their sex determined by temperature.
  • Clownfish start out as males but mature into females and have a strict dominance hierarchy.
  • Green spoonworm sex is determined by where a larva lands on the sea floor.
  • Whiptail lizards are a nearly all-female species that lay eggs that hatch into female clones of themselves.
  • The system of sex determination varies throughout the entire animal kingdom.
  • The sex of the baby of the speaker and his wife is going to be a boy.
  • The chance of producing a male or a female depends on the sex determination system of each animal.

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