week 1 - terminologies Flashcards
the study of inherited traits and their
variation
genetics
the sum of all biological processes by
which characteristics are transmitted from parents to their offspring.
hereditary
the units of heredity, which is the
transmission of inherited traits
genes
Genes can be found
on the
nuclei acid dna
2 types of nucleic acid
dna and rna
dna means
deoxyribonucleic acid
rna
ribonucleic acid
a molecule whose function is to store and
transfer genetic information.
dna
important molecule in protein synthesis
rna
Both DNA and RNa are polymers of repeating called
nucleotides
how many different nucleotides are present in DNA molecule?
The various sequence combinations of these bases ultimately
encode genetic information.
4
how central dogma happens?
DNA will transcribe to make mRNA and mRNA will make polypeptide
what are the different RNAs?
messenger RNA (mRNA)
Ribosomal RNA (rRNA)
Transfer RNA (tRNA)
carries the instructions
for protein synthesis to the sites of protein synthesis.
Messenger RNA (mRNA)
combines with proteins to
form ribosomes
Ribosomal RNA (rRNA)
RNA that delivers amino
acids to the sites of protein synthesis.
Transfer RNA (tRNA)
it is the complete set of genetic instructions
characteristic of an organism, including protein
encoding genes and other DNA sequences.
Genome
it dictates characteristics
dna sequence
structures that are a product of DNA
coiling in association with proteins
chromosomes
the segment of DNA strand that encodes for the
production of different proteins
genes
gene’s different variants is called
alleles
___ are products of mutations.
Alleles
defined as any heritable change in the DNA
sequence and are the source of all genetic variation
Mutations
observable traits or features of an
organism (alleles that are expressed)
Phenotype
set of alleles for a given trait carried by an
organism (alleles that are present)
genotype
a type of cell division in which one somatic
cell give rise to two new ones
mitosis
cell division involved in the production of
gametes
meiosis
what is a blue helix of life?
DNA
histone
is a PROTEIN that provides structural support for a chromosome