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TLS Online TPP Program

#Question id: 2379

Chloroplasts and mitochondria are good examples of the Endosymbiont Theory because

#Unit 2. Cellular Organization

  1. they both contain their own DNA and can reproduce themselves.

  2. they both have chromatids joined by a centromere.

  3. they both produce calcium oxalate crystals in their central vacuoles.

  4. they both contain inner and outer membranes.

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TLS Online TPP Program

#Question id: 29111

#Unit 8. Inheritance Biology

A plant with purple flowers is crossed with a plant with white flowers, and the F1 are self-fertilized to produce 105 F2 progeny with purple flowers and 45 with white flowers.
A scientist hypothesized that there are two genes with identical functions that control the dominant trait. The scientist also proposed that the two genes are not linked. The scientist carried out a chi-square test to test the hypothesis. Which one of the following options is the correct chi-square value obtained by the scientist?
TLS Online TPP Program

#Question id: 29112

#Unit 8. Inheritance Biology

An example of multiple alleles is at a locus that determines the feather pattern of mallard ducks. One allele, M, produces the wild-type mallard pattern, MR, produces restricted, and a third allele, md, produces dusky. In this allelic series, dominancy shows MR >M > md
If a cross between  MR md X M md, What proportion of progeny will be restricted?
TLS Online TPP Program

#Question id: 29114

#Unit 8. Inheritance Biology

Given below, is the result of a complementation test for six independent mutants (1 to 6)
TLS Online TPP Program

#Question id: 29115

#Unit 8. Inheritance Biology

Given below, is the result of a complementation test for seven independent mutants (A to G). '+' represents complementation; '_' represents non complementation. Based on the above, which one of the following conclusions is correct


a) The mutations can be ordered in a three cistron as A-G-B-C-D-E-F

b) All mutations belong to a single cistron, but their order cannot be determined.

c) There are three cistrons, mutations A and G represent one cistron, B, C and D represent the second cistron and E and F represents the third cistron.

d) There are three linkage groups, mutations A and G  represent linkage group-I, B, C and D represent linkage group-II, and E and F represents linkage group-III
TLS Online TPP Program

#Question id: 4900

#Unit 8. Inheritance Biology

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: 4901

#Unit 8. Inheritance Biology

Assume that the alleles A (dominant) and a (recessive) show a maternal effect mode of inheritance. In a cross between an Aa female and an aa male, what would be the phenotypes of the progeny?