3 Flashcards
Zygote
A fertilized cell (formed when a sperm cell fertilizes an egg cell)
Genome
Cell’s complete set of DNA
Plasmids
Small loops of extra DNA
Chromosomes
structures made of DNA and proteins
Diploid (2n)
body cells have two complete sets of chromosomes (one from each parents)
Haploid (1n)
gametes have one set of chromosomes
Homologous Pairs
pairs of chromosomes in a diploid organism that are similar in structure and genetic content
Sister Chromatids
identical copies of a chromosomes that are formed after DNA replication
How many chromosomes does a human have?
46 chromosomes
Genetics
study of heredity (how traits are passed down through genes from parents to offspring)
Homozygous
organisms with two identical alleles for a gene
Heterozygous
organisms with two different alleles for a gene