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int sci 3 lesson 12

Vocabulary on heredity

TermDefinition
DNA The blueprint for our bodies. Tells us what we will look like.
Chromosome Where genes are located
Genes Short segments of DNA that carry traits - ex. eye color or hair color.
Mutation Change in the DNA sequence that can cause significant errors in our bodies. They can also be passed down to offspring.
Allele Specific type of gene in which they tell you the exact form of a gene - ex. Brown hair, blonde hair, blue eyes, green eyes.
Genotype Combination of alleles - The letters for a alleles - Hh, HH, or hh.
Phenotype The physical look of a person - example: brown hair, blue eyes.
Dominant alleles Mask the the presence of recessive alleles - represented by a capital letter.
Recessive alleles You need two for the trait to show up in the traits of a person because it is not as powerful as the dominant allele.
Meiosis When sex cells are reproduced
Law of segregation During meiosis, the paired alleles separate into two different sex cells leaving just one allele in each.
Jumping genes Genes with no particular purpose jump from one location to another.
Genetic engineering When scientists can change genetic material to give it qualities that are desirable to humans.
Created by: Jdible1365
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