Water molecules contain _____________ hydrogen bond/s.

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#Question id: 4742

#SCPH28 | Zoology

In birds, sex is determined by a ZW chromosome scheme. Males are ZZ and females are ZW. A recessive lethal allele that causes death of the embryo is sometimes present on the Z chromosome in pigeons. What would be the sex ratio in the offspring of a cross between a male that is heterozygous for the lethal allele and a normal female?

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#Question id: 15616

#SCPH06 I Botany

The diagram below shows the F factor and a portion of the E. coli chromosome that has three different insertion sequences (IS) of the same type as is carried on F.

                     

Describe the three different Hfrs (Hfr #1, Hfr #2 and Hfr #3) that can be formed by recombination between the IS on F and each of the IS sequences on the chromosome. Some including the positions of each of the markers (A, B, C, and D) and state which of these markers would be transferred early?

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#Question id: 1631

#SCPH05 I Biotechnology

Specific antibodies are readily detectable in serum following primary contact with antigen after:

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#Question id: 667

#SCPH06 I Botany

Which represents the backbone of a protein?

Note: R = amino acid side chain

N = nitrogen

Cα = alpha carbon

C = carbonyl carbon

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#Question id: 1657

#SCPH05 I Biotechnology

Which of the following statements is TRUE of IgD?