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#Question id: 163


Which of the following statements about cystine is correct?

#XL - T Zoology
  1. Cystine forms when the —CH2—SH R group is oxidized to form a —CH2—S—S—CH2— disulfide bridge between two cysteines.

  2. Cystine is an example of a nonstandard amino acid, derived by linking two standard amino acids.

  3. Cystine is formed by the oxidation of the carboxylic acid group on cysteine.

  4. Cystine is formed through a peptide linkage between two cysteines.

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TLS Online TPP Program

#Question id: 4805

#XL - T Zoology

What is maximum parental frequency for two genes if single cross over within two strands?

TLS Online TPP Program

#Question id: 4806

#XL - T Zoology

Four incompletely link gene as cis configuration, Heterozygote ABCD/abcd produced a gamete with genotype AbCD is due to

TLS Online TPP Program

#Question id: 4807

#XL - T Zoology

Three incompletely link marker gene was found. There is a marker A gene present in middle. Cross between aaBBcc X AAbbCC to produce heterozygous were allowed test cross, which of the following test cross offspring should be least frequent?

TLS Online TPP Program

#Question id: 4808

#XL - T Zoology

When F1 female Drosophila of the genotype AaBbCc is test crossed, ( Gene A and B located at 10 map unit in transe configuration but gene C are independently assort for both gene. Which of the following test cross progeny that is that is more frequent?

TLS Online TPP Program

#Question id: 4900

#XL - T Zoology

The chlorophyll-deficient types occur in a particular plant species due to a mutation in the DNA of the chloroplast itself, Female cytoplasm chlorophyll-deficient organisms crossed with male normal chlorophyll will produce progeny

TLS Online TPP Program

#Question id: 4900

#XL - R Botany

The chlorophyll-deficient types occur in a particular plant species due to a mutation in the DNA of the chloroplast itself, Female cytoplasm chlorophyll-deficient organisms crossed with male normal chlorophyll will produce progeny