DNA & Genetics Revision

DNA stands for:

• Ribonucleic acid

• Diribonucleic acid

• Deoxyribonucleic acid

• Deeynayyy

Genes are short sequences of DNA that code for

Adenine is one of 4 DNA bases and can only bind to

• Guamine

• Thymine

• Cytosine

Guanine is one of 4 DNA bases and can only bind to

• Cytosine

• Thymine

• Adenine

Which of the following statements regarding a diploid cell is true?

• The chromosomes are in pairs

• There are no chromosome pairs

Which of the following statements regarding a haploid cell is true?

• The chromosomes are in pairs

• There are no chromosome pairs

Which of the statements regarding this human karyotype is true?

• This person would be a female

• This cell is haploid

• Chromosome 21 has 3 copies

• This person would be a male

The DNA of an organism was sequenced. 32% of the bases are Cytosine. Calculate the percentage of bases that would be Adenine.

Calculate the complementary strand for the following DNA sample:

ATGCCCGAGTTAAC

• TACGGGATCTTGGC

• TACGGGCTCAATTG

• ATGCCCGAGTTAAC

• TTCGAGCTATTATA

What is the function of DNA Helicase during DNA replication?

• "unzipping" the two strands of DNA

• Joining together nucleotides