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13 Cards in this Set
- Front
- Back
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All human cells have how many chromosomes, how many pairs? |
46 chromosomes, 23 pairs |
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What is a zygote? |
When an egg fuses with a sperm they form a zygote. |
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What is DNA? |
The genetic information from your parents come in the form of a molecule called DNA. |
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What does DNA stand for? |
DeoxyriboNucleic Acid |
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What are genes? |
Genes make us who we are. They are instructions that control how organisms develop and function. |
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The DNA molecule looks like a twisted ladder. |
This spiral shape is called a double helix. |
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Each cell nucleus contains about 2m of DNA strands. |
Chromosomes contained tightly coiled DNA (double helix). Chromosomes are arranged in pairs. |
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Genotypes and Phenotypes |
Your genotype is the set of genes you carry. Your outward characteristics are called your Phenotypes. |
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Genotype and Phenotypes. |
You inherit your genotype from your parents, your phenotype is affected by both your genes and your environment. |
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Genetic engineering |
Changing the DNA of a living thing to change its characteristics. |
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Clones |
Clones are genetically identical organisms |
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Asexual reproduction |
In asexual reproduction, a single organism makes a copy of itself with exactly the same genetic code. |
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Allele |
An allele is a gene that has more than two options /types. |
