TLS Online TPP Program

#Question id: 3300


In a population individuals having heterozygous phenotype are more favored than either homozygous, under such condition-

#Unit 11. Evolution and Behavior
  1. Recessive alleles would be lost from population 

  2. Dominant alleles would be lost

  3. Both alleles would remain in population       

  4. Alleles would be lost randomly

More Questions
TLS Online TPP Program

#Question id: 12503

#Unit 8. Inheritance Biology

In this pedigree II 1 is affected with an autosomal recessive disorder. The disease status for II 2 is unknown. A and B represent alleles at a locus which is tightly linked to the disease locus with recombination fraction of 0. Using the linked markers, II2 can be told that:

TLS Online TPP Program

#Question id: 12504

#Unit 8. Inheritance Biology

In this pedigree II 3 and III 1 are affected with an X-linked recessive disorder which is tightly linked to a marker locus with alleles A and B, with a recombination fraction of 0 between the disease and marker loci. Analysis of the linked marker results indicates that the disease must be segregating with:



TLS Online TPP Program

#Question id: 12505

#Unit 8. Inheritance Biology

The marker genotype for I 2 must have been:

TLS Online TPP Program

#Question id: 12506

#Unit 8. Inheritance Biology

Using the linked markers III 3 can be told that:

TLS Online TPP Program

#Question id: 12507

#Unit 8. Inheritance Biology

In this pedigree I 1 and II 2 have Becker muscular dystrophy which shows X-linked recessive inheritance. III 2 has oculocutaneous albinism which shows autosomal recessive inheritance with an incidence in the general population of 1 in 10 000. The disease status for both Becker muscular dystrophy and oculocutaneous albinism is unknown for IV 1 and IV 2.
What is the probability that III 3 is a carrier of Becker muscular dystrophy?


TLS Online TPP Program

#Question id: 12508

#Unit 8. Inheritance Biology

In this pedigree I 1 and II 2 have Becker muscular dystrophy which shows X-linked recessive inheritance. III 2 has oculocutaneous albinism which shows autosomal recessive inheritance with an incidence in the general population of 1 in 10 000. The disease status for both Becker muscular dystrophy and oculocutaneous albinism is unknown for IV 1 and IV 2.
What is the probability that III 3 is a carrier of oculocutaneous albinism?