Note Nov 4, 2024 PDF

A man with type AB blood marries a woman with type O blood. What proportions of blood types would you expect to observe in their o spring? i 1A 1A I 1A A 1A A...

A man with type AB blood marries a woman with type O blood. What proportions of blood types would you expect to observe in their o spring? i 1A 1A I 1A A 1A Ai Nov8th Q How many Barrbodieswouldbeexpectedin mammaliancellswitha chromosomal constitution of XXXY 3 barrbodies Q Bettyhas amitochondrialdiseasewhileherhusbandDon is unaffectedWhatistheriskto theirfuturechildren riskoftransmittingdiseasetoALLchildren In Drosphila, the purple (p) and curved (c) genes are on the same chromosome. A y homozygous for purple eyes and straight wings (pp c+c+) is crossed to a y homozygous for red eyes and curved wings (p+p+cc). Which of the following represent recombinant chromosome in the gametes of the F1 heterzygotes? ppctctptptcc FI Ict O p If 100 out of 1000 o spring are Recombinants, then the recombination frequency is 10 ___ and the genes are said to be ___ 10 mu apart. What is the main purpose of meiosis in animals? Toproducegametes In meiosis, a homologous pair of chromosomes in a bivalent will possess four _____ alleles for each locus. What process ends the multicellular haploid phase of a plant’s life cycle? Fertilization Avery, MacLeod and McCarty extended Gri th’s experiments by showing that the “transformation principle” was inactivated by: DNase What identi es the 3’ end of a DNA strand? A free -OH group on the sugar. If a species has 22% guanine in its genome, it would be expected to have 28% adenine in its genome. 22 + 28 = 50 Which of the following is the most likely consequence of de ciency of DNA ligase? Failureof DNA fragments tolinkintoasinglecontinuous strand A repeating DNA sequence at the end of chromosomes that identi es & help protects the chromosome ends is a: Telomere What is the promoter region? AregionofDNAwhereRNApolymerasebindsandinitiatestranscription Spliceosomes are composed of: snRNPs What is NOT a component of biological membranes? Nucleicacids All of the following statements about membrane uidity are true EXCEPT: Saturatedfattyacidtailsmakethemembranemorefluid At hightemperaturescholesterolmakesthemembranelessfluid Membrane fluidity isaffectedbythepresence ofdoublebonds inthefattyacidtails Shorterfattyacidtailsincreasemembranefluidity Why is Fe+ not able to move directly through the membrane? It carries a charge A 0.9% NaCl solution is isotonic to red blood cells. If a red blood cell is placed in 4% NaCl, what will occur? Crenation Anticodon is the term applied to: ThepartofthetRNAthatinteractswiththecodon Which of the following involves moving a peptidyl-tRNA from the A site to the P site? Elongationoftranslation What type of transport protein can move two or more di erent molecules in opposite directions? Antiporter