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Hemophilia A is an X linked recessive trait in humans The normal allele is designated X and the Hemophilia A allele is X A father and mother with normal blood clotting have a hemophilic son The parents genotypes must be A X X and X Y B X X and X Y C X X and X Y D X X and X Y E XX and XY 21 Two genes in a genetic cross appear to be unlinked when A crossing over occurs during second meiotic anaphase 25 B the frequency of parental types exceeds that of recombinants in the test cross C the centromere is located between them on the chromosome 22 We used to purify a genomic DNA digest from RE EcoRI A polyacrylamide SDS gel electrophoresis B Qiaquick DNA cleanup 24 D alleles pair during S phase E chromosomes align during telophase I of meiosis 23 The fibrous structural protein consisting of a triple helix is A collagen B silk fibroin C keratin D cotton E nylon C Ni chelate spin column and elution with imidazole D PCR and DNA sequencing to detect SNPs E Reverse Transcription and Western blotting to detect Alu polymorphism is the cline that leads to increased frequency of the LDH Bb allele in mumichogs A Novichok as an assassination method B Water temperature C Longitude D Lactose as sole carbon source E Latency of ultrasound chirps is an element of globular protein tertiary structure A Aminoacyl bond B Double helix C Base triple D Hydrophilic exterior 5 Duplex stem and unpaired loop

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