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#Question id: 5700

During meiosis, homologous chromosomes pair up along their lengths. The most plausible explanation for the karyotype structure shown above is that

#SCPH06 I Botany

  1. portions of non-homologous chromosomes have been translocated

  2. one of the two homologous chromosomes has suffered a deletion

  3. one of the two homologous chromosomes has undergone an inversion

  4. the homologous chromosomes have each suffered a gene duplication

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TLS Online TPP Program

#Question id: 15872

#SCPH05 I Biotechnology

For optimum callus growth, the given some following vitamins are required, except;
TLS Online TPP Program

#Question id: 5218

#SCPH28 | Zoology

Several of the different globin genes are expressed in humans, but at different times in development. What mechanism could allow for this?
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#Question id: 22941

#I Life Science/ Life Sciences Group – I-V

The ER-localized protein, which is required for FT movement into the phloem translocation stream is
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#Question id: 14742

#SCPH05 I Biotechnology

Gel chromatography is used for hormone separation. A pilot-plant scale gel chromatography column packed with sephacryl resin is used to separate two hormones, A and B. The column is 5 cm in diameter and 30 cm in height: V, = 1.9x 10-4m3, Wr = 3x10-3m3 /kg dry sephacryl, ps =1.25 x 103 kg/m3 . The partition coefficients are kpA =0.38 and kpB= 0.15. If the eluting flow rate is 0.7 I/h, what is the retention time for each hormone? 
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#Question id: 7312

#SCPH01 Biochemistry

Following statements regarding to the classes of genes that regulate floral development:

A.  Floral organ identity genes directly control floral identity. The proteins encoded by these genes are transcription factors that likely control the expression of other genes whose products are involved in the formation and/or function of floral organs.

B.  Cadastral genes act as spatial regulators of the floral organ identity genes by setting boundaries for their expression.

C.   Meristem identity genes are necessary for the initial induction of the organ identity genes. These genes are the positive regulators of floral organ identity.

D.  Cadastral genes act as negative regulators of the floral organ identity genes by inhibits their expression.

E.   Meristem identity genes are the negative regulators of floral organ identity genes.

Which of the above statements are true?