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GCSE Biology Paper 2
Sexual and Asexual Reproduction
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Sihaam
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Cards (21)
How many pairs of chromosomes do human cells contain?
23
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Why does the diagram show only four pairs of chromosomes?
To make the diagram
easier
to see
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In mitosis, how many identical cells are produced from one cell?
Two
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What are cells called where the chromosomes are not paired?
Gametes
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In humans, what are the two types of gametes?
Sperm cells
and
egg cells
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Are sperm cells larger or smaller than egg cells?
Smaller
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How many single chromosomes do human sperm and egg cells contain?
23
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What type of cell division makes gametes?
Meiosis
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How does meiosis differ from mitosis in terms of the cells produced?
Meiosis produces
non-identical
cells
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Besides animals, in what other organisms does meiosis take place?
Flowering plants
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In flowering plants, what are the gametes called?
Pollen
and
egg cells
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What type of reproduction do both animals and flowering plants carry out?
Sexual reproduction
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What is the fusion of male and female gametes called?
Fertilization
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What happens to genetic information during sexual reproduction?
There is
mixing
of genetic information
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Why does variation occur in offspring from sexual reproduction?
Every
gamete
is different
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In asexual reproduction, how many parents are there?
One
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Why does asexual reproduction not involve gametes?
Because there's only one
parent
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What happens to genetic information during asexual reproduction?
There is no
mixing
of genetic information
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What are the offspring in asexual reproduction called?
Clones
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Which type of cell division does asexual reproduction involve?
Mitosis
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Are offspring plants genetically identical or different to the parent in asexual reproduction?
Genetically
identical
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