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Genes Review

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Genes Review
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1) Selective breeding – chosen based on what can be seen and detected (favourable phenotype) Genetic engineering – selected based on genes

2) - DNA are found in nucleus (where most DNA are found), mitochondria, chloroplast

3) - Translation requires ribosome, mRNA, tRNA (anticodon) and amino acids - DNA template, polymerase for transcription

4) Mitosis generates daughter cells that are identical Meiosis – homologous recombination

5) DNA coding sequence: 5` GGGCCCTTTAAA 3` DNA template: 5` TTTAAAGGGCCC 3` 6) Insertion - Additional A (shifting the reading frame of codon)

7) Kevin is a carrier of the disease (heterozygous), wife (homozygous dominant allele). Therefore, 50% of offsprings are carriers and 50% are normal.

8) Cannot predict Kevin’s brother unless information on parents’ genotypes is available

9) Kevin possesses one wildtype counterpart, thus, no cancer Wild type protein T is fully suppressed (recessive)

10) Nucleotides (basic building blocks) < DNA < Chromosome < nucleus < cell < tissue

11) Non-template/coding/sense/inactive strand (no transcription needed)

5’…ATATGCCTATAAA…3’ , mRNA 5` …AUAUGCCUAUAAA…3` (start codon)

12) Erwin Chargaff (NOT WATSON AND CRICK)

13) Organization of DNA : - Viral genomes are very compact and can utilize overlapping frames for synthesis of different proteins - Human genome mainly consists of non-coding sequences - Histones are found in eukaryotic chromosomes only

14) Function and structure of protein may or maybe not change in the event of a substitution (look at the table)

15) Differences between DNA and RNA: one of the pyrimidine base is different sugar is different (DNA – deoxyribose sugar, RNA – ribo sugar)

16) During DNA replication, template/non-coding strands are read from 3` to 5` , synthesized strand grows from 5’ to 3’ (anti-parallel)

17) Characteristics of human cells
All gamete cells are haploid

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