genetics life science final 2025

kms

what is dna

molecule carries genetic instruction for all living things

what atoms compose dna

DNA is composed of carbon, hydrogen, oxygen, nitrogen, and phosphorus atoms.

structure of dna

double helix

complementary bases in dna

adenine, thynine, cytosine and guanine

what parts of our dna are the same as other species

same four chemical bases

what parts of our dna are the different fromother species

genes that determine species-specific traits

process of dna replication

cell creates exact copy of itself

purpose of replicating dna

ensuring every cell is identical

product of dna replication

two identical dna molecules

where does newly made dna go

cell nucleus

why does the structure of dna contribute to accurate replication

dna's double helix lets bases pair in a matching way, so each strand can guide the making of a new one, ensuring accurate copying. this structure also allows for proofreading and error correction mechanisms during replication.

atoms that make up dna

carbon, hydrogen, oxygen, nitrogen and phosphorus

complementary base pairs in dna and rna

thynine and adenine, glycine and cytosine, uracil and adenine.

compare dna with rna in terms of structure

made of nucleotides

contrast dna with rna in terms of structure

dna is double stranded while rna is single stranded

what is a gene

contains genetic code for proteins

what does a gene do

has instructions for building proteins

steps of transcription

steps of translation