MMC Exam 1 Flashcards by Asa Rankin | Brainscape

Q

DNA

A

Is composed of ribose, phosphate, nucleotide bases, and a strong hydrogen bonds
Polymer of nucleotide units bound together end to end by weak hydrogen bonds
Replicates prior to cell division during mitosis

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Q

Meiosis

A

Meiosis II consists of division of haploid cells
In the male, the result is 4 functional sperm cells

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Q

RNA

A

mRNA carries genetic information from DNA
Involved in both transcription and translation

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Q

Gene Linkage

A

Crossing over involves the reciprocal exchange of chromosome segments between homologs and may disrupt the linkage of 2 genes
Recombination involves new allelic pairing of genes

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Q

Post-transcriptional RNA modifications include

A

Addition of 7-methylguanosinn cap (G-cap)
Addition of poly A tail at a primary transcript
Alternative splicing of introns

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Q

AaBb x aabb is an illustration of a…

A

dihybrid cross
test cross

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Q

Benefits of alternative splicing include

A

Generates different proteins from single gene

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Q

Stop codons

A

UAA
UGA
UAG

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Q

DNA polymerase

A

Synthesize DNA in 5’ to 3’ direction

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Q

What is the role of tRNA during transcription?

A

Carry amino acids to mRNA for correct placement is protein chain

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