how many chromosomes does a person usually inherit from each parent?
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Every human cell contains 46 chromosomes, arranged as 23 pairs (called autosomes), with one member of each pair inherited from each parent at the time of conception.
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Germ cells contain a complete set of 46 chromosomes (23 maternal chromosomes and 23 paternal chromosomes). ... The overall process of meiosis produces four daughter cells from one single parent cell. Each daughter cell is haploid, because it has half the number of chromosomes as the original parent cell.
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Normally, at the time of conception a baby inherits genetic information from its parents in the form of 46 chromosomes: 23 from the mother and 23 from the father. In most cases of Down syndrome, a child gets an extra chromosome 21 — for a total of 47 chromosomes instead of 46.
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The genetic basis of Down syndrome There are 23 pairs of chromosomes, for a total of 46. Half the chromosomes come from the egg (the mother) and half come from the sperm (the father).
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Each person has 23 pairs of chromosomes, or 46 in all. For each pair, you get one chromosome from your mother and one chromosome from your father. About 1 in 150 babies is born with a chromosomal condition. Down syndrome is an example of a chromosomal condition.
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Dominant and recessive genes When the 23 chromosomes from the father's sperm and the 23 from the mother's egg meet, they pair up. The genes on the chromosomes pair up, too. The paired genes, one from each parent, carry the plans for the same part of the body.
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Each daughter cell will have 46 daughter chromosomes. Each of the 46 original chromosomes splits into two daughter chromosomes, so there are two sets of 46 daughter chromosomes that end up in each cell. Human cells have 46 chromosomes.
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Every human cell has 23 pairs of chromosomes for a total of 46 (aside from sperm and egg cells, which each contain only 23 chromosomes).
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Since a person inherits half of their DNA from each parent, you share about 3700 cM with each parent.
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The basis of sexual reproduction is that a fertilized egg gets half its chromosomes from each parent—sperm and eggs each contributing one partner in each pair of chromosomes. We humans have 23 pairs of 46 chromosomes: so our sperm or eggs have 23 chromosomes each.
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(The gametes of diploid organisms contain only single unpaired chromosomes and are called haploid.) Each pair of chromosomes comprises one chromosome inherited from the father and one inherited from the mother. For example, in humans, somatic cells contain 46 chromosomes organized into 23 pairs.
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Humans have 23 pairs of chromosomes and other great apes have 24 pairs of chromosomes. In the human evolutionary lineage, two ancestral ape chromosomes fused at their telomeres, producing human chromosome 2.
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As you can see this happens for each of your 23 chromosomes. This is actually how you are 25% related to your grandparents. Because of recombination, each chromosome you got from your mom is a mix of her parents' chromosomes and each chromosome you got from your dad is a mix of his parents' chromosomes.
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Where Did You Get Your Genes? You got all your genes from your parents. For each pair of their chromosomes, you get one chromosome from your mother and one from your father. When the egg and sperm cells come together, they create the full set of 46 chromosomes or 23 pairs.
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One set of 23 comes from mom and the other 23 from dad. The egg and sperm cells are an exception--they have only 23 chromosomes each. A sperm from the man combines with a woman's egg in her womb to make a zygote. The zygote ends up with a total of 46 chromosomes and can now grow into a baby.
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For example, humans are diploid (2n) and have 46 chromosomes in their normal body cells. These 46 chromosomes are organized into 23 pairs: 22 pairs of autosomes and 1 pair of sex chromosomes. The sex cells of a human are haploid (n), containing only one homologous chromosome from each pair.
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After meiosis, half the number as were in the starting parent cell. Humans have 46 chromosomes, and the starting parent cell - whether we are talking about mitosis or meiosis - has 46 chromosomes. After mitosis, each of the 2 daughter cells will also have 46 chromosomes.