TLS Online TPP Program

#Question id: 4801


You set up a mapping cross involving two genes in Aspergillus and determine the following percentages of tetrad types: parental ditype 51%, nonparentalditype 49%. What can you say about your genes?

#Part-A Aptitude & General Biotechnology
  1. They are closely linked.

  2. they are unlinked.

  3. They are lethal.

  4. They are not expressed in the phenotype.

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TLS Online TPP Program

#Question id: 3268

#Part-A Aptitude & General Biotechnology

A population of insects is in Hardy-Weinberg equilibrium for a gene with alleles A = orange and a = yellow eyes. There are 91% orange and 9% yellow individuals in the population. If the fitness of the yellow phenotype suddenly drops to zero, what will be the allele frequency in the next generation?

TLS Online TPP Program

#Question id: 3269

#Part-A Aptitude & General Biotechnology

Two plant species live in the same biome but on different continents. Although the two species are not at all closely related, they may appear quite similar as a result of

TLS Online TPP Program

#Question id: 3270

#Part-A Aptitude & General Biotechnology

Heterozygote advantage should be most closely linked to which of the following?

TLS Online TPP Program

#Question id: 3271

#Part-A Aptitude & General Biotechnology

Consider hemophilia A, a clotting disorder caused by an X-linked recessive allele with a frequency (q) of approximately 1 in 10,000. The frequency of the disease among females and among male respectively

TLS Online TPP Program

#Question id: 3272

#Part-A Aptitude & General Biotechnology

Calculate the frequencies of the XO and X+ alleles respectively for this population.

TLS Online TPP Program

#Question id: 3273

#Part-A Aptitude & General Biotechnology

The number of forward mutations is equal to the number of reverse mutations then

a) Population is in equilibrium for forward and reverse mutation rates

b) The population is being in Hardy–Weinberg equilibrium

c) No further change in allelic frequency