Mutations
A mutation that create a premature stop codon?
Nonsense Mutation
Is DNA single stranded or double?
Double stranded
The molecule that Carries amino acids to ribosomes?
tRNA
How do mutations lead to genetic variations?
Mutations generators new alleles.
What is produced during translation?
new protein
What mutation does not alter the amino acids sequence?
Silent mutation
what is one strand against the other in the double helix?
The process of mRNA synthesis from DNA?
transcription
What type of selection tends to increase genetic variation?
Disruptive selection
What is submit of DNA?
Nucleotides
A mutation that changes a single nucleotide?
Point mutation
A sequence of three Neculeotides in a DNA or RNA that codes for a specific amino acid?
Codon
The type of dominance where both alleles are expressed equally.
Codominance
what are two main sources of genetic variation?
Mutations and recombination of genes
Which structure of a animal cell does DNA replication take place?
The nucleus
A mutation that shift the reading frame of a gene?
Frame shift mutation
When do cells duplicate their DNA?
Interphase
What is the number of chromosomes in a human gamete?
23
What is the relationship between meiosis and genetic variations?
Meiosis produces variation
When does transcription takes place?
the cytoplasm in prokaryotes and in nucleus in eukaryotes
A mutation that shifts the reading frame of a gene.
Thymine
How do cells make accurate copies of DNA?
A process called DNA replication
Who is the father of genetics?
Gregor Mendal
why is genetic variation important?
It allows species to adapt to environments.
Which type of RNA molecule contains anticodon?
a transfer RNA (tRNA)