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Biology AQA GCSE
Inheritance
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Cards (24)
What process forms gametes in sexual reproduction?
Meiosis
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What are gametes also known as?
Sex cells
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How much genetic material do gametes contain?
Half
the genetic material
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What do we call cells that contain half the genetic material?
Haploid
cells
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What happens when two gametes combine?
They form a normal
diploid
cell
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What is the term for cells with two sets of genetic information?
Diploid
cells
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What is the first step in meiosis?
Replicate
all of the cell's DNA
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What shape do chromosomes take after DNA replication?
X shape
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How many different types of chromosomes do humans have?
23
different types
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What are maternal chromosomes?
Chromosomes
from
the
mother
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What are paternal chromosomes?
Chromosomes
from
the
father
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How many individual chromosomes does each human cell have?
46
individual chromosomes
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What happens to chromosome pairs during meiosis?
They are randomly
distributed
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What is the result of the first division in meiosis?
Two cells with different
DNA
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What happens during the second division of meiosis?
Chromosome arms
are pulled apart
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How many cells are produced at the end of meiosis?
Four
cells
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Why are gametes genetically unique?
Due to tiny changes during
meiosis
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What do male gametes develop into?
Sperm cells
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What do female gametes develop into?
Egg
cells
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What happens during fertilization?
A
sperm
and
egg
fuse
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What type of cell is formed after fertilization?
Diploid cell
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What process does the diploid cell undergo after fertilization?
Mitosis
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What does the diploid cell eventually form?
An
embryo
and then a
fetus
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What video is linked in the description for further learning?
Mitosis
video
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