Genetics quiz
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How many chromosomes are in a human skin cell?
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More questions about Genetics
These visible examples show the question style. LearnClash turns the full topic into ranked duels and spaced repetition.
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Horses have 64 chromosomes, donkeys 62. How many do mules have?
Answer: 63
Why: Its horse and donkey chromosomes cannot pair up properly to make eggs or sperm, so mules are almost always sterile.
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What do you inherit only from your mother?
Answer: Mitochondria
Why: Sperm do bring mitochondria into the egg, but these are tagged and destroyed soon after fertilization.
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What is it called when red and white snapdragons make pink offspring?
Answer: Incomplete dominance
Why: Crossing two pinks brings red and white back in a 1:2:1 ratio, so the alleles stayed separate all along.
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Which cats are almost always female?
Answer: Tortoiseshell
Why: Orange and black coat color sits on the X chromosome, so a cat needs two X chromosomes to show both.
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What darkens a Siamese cat's ears, paws and tail?
Answer: Cooler skin
Why: Born from a warm womb, Siamese kittens arrive all white, and their cooler points darken as they grow.
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What chance does a healthy child of two carriers have of being a carrier?
Answer: 2 in 3
Why: Being healthy rules out the box with two faulty copies, and two of the three boxes left hold one faulty copy.
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