TLS Online TPP Program

#Question id: 12487


Neurofibromatosis type 1 is one of the most common autosomal dominant disorders. A woman with neurofibromatosis type 1 has an unaffected partner. Which of the following is correct regarding their children?

#Part-B Specialized Branches in Biotechnology
  1. The probability that each of their children will be affected is 1 in 4.
  2. The probability that their second child will be affected if their first child is affected is 1 in 4.
  3. The probability that their third child will be affected if their first two children are affected is 1 in 2.
  4. If their first child is affected then their second child will not be affected.
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TLS Online TPP Program

#Question id: 4809

#Part-A Aptitude & General Biotechnology

The upper most following figure above shows the locations of four genes on the genetic map of an organism; the lower figure shows the locations of the same four genes on a physical map derived from the nucleotide sequence of the DNA of that organism. The maps are not identical because

TLS Online TPP Program

#Question id: 4810

#Part-A Aptitude & General Biotechnology

In a haploid organism, the C and D loci are 8 m.u. apart. From a cross C d X c D, which of the following proportion following progeny classes: (a) C D; (b) c d; (c) C d

TLS Online TPP Program

#Question id: 4811

#Part-A Aptitude & General Biotechnology

Three incompletely link gene as a B-A-C order. A cross allowed between AAbbcc X aaBBCC produce f1 progeny allowed test cross. Which of the following offspring is a result of double cross over?

TLS Online TPP Program

#Question id: 4812

#Part-A Aptitude & General Biotechnology

Two character X and Y ,both follow law of dominance due to 3:1 F2 phenotypic ratio monohybrid cross separately If carry out dihybrid selfing cross for heterozygous genotype for both character does not follow law of independence assortment in normal environmental condition due to?

TLS Online TPP Program

#Question id: 4813

#Part-A Aptitude & General Biotechnology

You perform the three different two-factor crosses (Cross 1: XY and xy, Cross 2: YZ and yz, and Cross 3: XZ and xz). Assume all crosses are between diploid flies homozygous for the alleles of these genes. You observe 7% recombinants in the first cross, 20% recombinants in the second cross, and 13% recombinants in the third cross. if cross between XyZ and xYz leads to which of the followining recombinant with double cross over .

TLS Online TPP Program

#Question id: 4900

#Part-A Aptitude & General Biotechnology

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