Genetics: Protein Synthesis, Mutations, & Biotechnology

What is a difference between the structure of DNA & RNA?

• DNA is single stranded, RNA is double stranded

• DNA contains thymine, RNA contains uracil

• DNA contains ribose, RNA contains deoxyribose

• DNA contains guanine, RNA does not

Perform transcription on the following DNA strand:

ATC GGG ATT CGT

• AUC GGG AUU CGU

• TAG CCC TAA GCA

• UAG CCC UAA GCA

• ATC GGG ATT CGT

Perform translation on the following mRNA strand:

AUG GCC UGU CGA

• Trp Ala Cys Arg

• Met Pro Cys Arg

• Met Ala Val Arg

• Met Ala Cys Arg

How many nucleotides build a mRNA codon?

• 1

• 2

• 3

• 4

Is this a DNA strand, RNA strand, or polypeptide chain?

ACG GCA GGG ACU

• DNA

• RNA

• Polypeptide

What type of genetic mutation occured?

• frameshift insertion

• frameshift deletion

• point substitution

• chromosomal mutation

What is the function of tRNA in translation?

• bring amino acids to the ribosome

• direct the mRNA outside of the nucleus

• construct the ribosomal subunits

• tRNA is not involved in translation

Is this a karyotype of a male or a female?

• male

• female

At what chromosome is there a chromosomal mutation?

• X

• Y

• 13

• This is a healthy male.

The following diagram depicts an improper sorting of chromosomes. This is also known as

• karyotype

• nondisjunction

• meiosis

• recombination