13. Rare instances in which individuals receive both copies of one chromosome fr

Question

13. Rare instances in which individuals receive both copies of one chromosome from one parent are called ________________.
a. Independent Assortment Slippage b. bichromosomal monosomy
c. uniparental disomy d. synaptonemy
e. uniparental synaptonemy
14. Mendel demonstrated that the unit of inheritance is particulate (not fluid) and Avery, McCarty and MacLeod showed, by transformation that the units were DNA. Benzer then used the rII gene(s) of T4 phage to show that
a. complementation occurs between genes.
b. fine structure gene maps can be produced by mixed infection and a selection system.
c. recombination can occur within a gene.
d. the nucleotide is the unit of mutation and recombination.
e. All of the above.
15. In phage crosses or mixed infections recombination frequency is calculated as the sum of recombinant plaques divided by the total number of plaques. To estimate very small recombination frequencies Benzer devised a system in which only recombinant phage could grow and form plaques. The total number of plaques ( recombinant and nonrecombinant ) was estimated by plating a greater dilution on a permissive bacterial strain. If 203 recombinant plaques are counted and the total number of plaques is 10,863, the recombinant frequency is
a. 0.23 b. 0.86 c. 0.32 d. 0.0098 e. 0.0187
16. In a mixed infection two rII mutants, neither of which was able to grow on E. coli K, produced plaques. These mutants complement one another and are, therefore,_______________. a. on different genes. b. nutritionally difficient.
c. prototrophs d. auxotrophs e. frameshifts

Explanation / Answer

QUESTION 13 ANS IS c) uniparental disomy QUESTION 14 ANS IS e)ALL of the above QUESTION 15 ANS IS E) 0.0187 QUESTION 16 ANS IS a)on different genes

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.