A test cross shows 960 parental and 40 recombinant offspring; the map distance is A 2 cM B 8 cM
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Chapter 22: Genetics—Mendelian to Molecular (Set-4)
A heterozygote advantage helps maintain A One allele only B No variation C Both alleles D Only recessive Explanation In
Continue readingChapter 22: Genetics—Mendelian to Molecular (Set-3)
A dihybrid test cross (AaBb × aabb) most commonly gives A 3:1 ratio B 1:1:1:1 C 1:1 ratio D 9:3:3:1
Continue readingChapter 22: Genetics—Mendelian to Molecular (Set-2)
In Mendelian monohybrid F1 generation, individuals are usually A All homozygous B All heterozygous C All recessive D All dwarf
Continue readingChapter 22: Genetics—Mendelian to Molecular (Set-1)
Mendel used which plant mainly for experiments A Rice plant B Maize plant C Mustard plant D Pea plant Explanation
Continue readingChapter 21: Chromosomes, Cell Division and Molecular Genetics (Set-1)
In a eukaryotic chromosome, the DNA is mainly packed around proteins to form what basic unit A Ribosome subunit B
Continue readingChapter 21: Chromosomes, Cell Division and Molecular Genetics (Set-5)
The nucleosome core particle contains histones A H1 H2A H2B H4 B H1 H3 H4 H5 C H2A H2B H1
Continue readingChapter 21: Chromosomes, Cell Division and Molecular Genetics (Set-4)
The main role of cohesin during cell division is to A Build ribosome subunits B Join sister chromatids C Extend
Continue readingChapter 21: Chromosomes, Cell Division and Molecular Genetics (Set-3)
The nucleosome “bead” is connected to the next bead by A Linker DNA B rRNA chain C Spindle fiber D
Continue readingChapter 21: Chromosomes, Cell Division and Molecular Genetics (Set-2)
Histone H1 mainly helps in A DNA unwinding B Chromatin condensation C mRNA splicing D Codon recognition Explanation Histone H1
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