Genetics revi Flashcards
what is the function of dna and where is it found
DNA codes for proteins and it is found in the nucleus of a cell
What is a nucleotide. What three parts comrpsie a nucleotide
Nucleotide is a subunit of Dna that consists of one phosphate , one sugar and one nitrogenious base
what are the bases
adenine thymine guanine cytosine
what is a gene
segement of dna that encodes for a trait eg hair color blood typ e
how is dna arranged
in chromsomes
rank the following structures from most complex to least complex
chromoxomes, gene, molecule of dna
how many chromsomes are there in a human body cell
46
how many chromsomes in a sex cell
23
what cells are haploids and what cells r diploids
haploids are sex cells and diploids are body cells.
what sex chromsomes do males have and females
males have x and y
females have x and x
give the term used to name the first 22 pairs of chrosmomes
autosomes
what does a karyotype show ? WHy are karyotypes useful
Karyotypes is an image that orders chromosomes from largest to smallest. karyotypes are useful as it shows whether you have any abnormalities in ur genetics or capture any inherited diseases
what base is present in rna but not dna
Uracil is present in rna but not dna. And thymine is present in dna but now rna
another difference bwetween rna and dna
rna is single stranded
it contains sugar ribose instead of deoxyribose
