genetics Flashcards
A segment of DNA that codes for a protein
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A gene
What’s a Chromosome
Structures in the nucleus of a cell made up of DNA
Part of a cell’s life where it grows and copies DNA to prepare for division
interphase
What is mitosis
The division of the nucleus of a body cell; both daughter cells have the same number of chromosomes
The division of a nucleus that decreases the number of chromosomes to make four different gametes
it’s meiosis
Dominant traits
A trait that is fully expressed and is shown in the offspring
a trait that is only expressed when the dominant trait isn’t present; trait is hidden
recessive trait
heterozygous
Having two different alleles for a trait; Aa
Having two of the same alleles for a trait; AA or aa
Homozygous
allele
Different forms of a gene, an Example is that in pea plants there are purple or white flowers
A Diagram that shows the occurrence of a trait in a family
pedigree
Genetic disorder
An inherited disease caused by a mutation in a gene or on a chromosome; Gabriel’s ADHD
Genetic material that contains information and determines characteristics.
DNA
Nucleotide
Base unit of dna
Adenine, thymine, Guanine, Cytosine
you can remember the base units of nucleotides by remembering these words: A(i)den, Thyme, Guam, Cyprus
Process of making a copy of a dna (Occurs during interphase; specific enzymes are required)
DNA replication