Plant Genetics and Genomics Quiz

The organelles of special interest for plant breeders are those directly associated with plant ______.

A genome may be defined as a set of chromosomes (or genes) within a ______ of a species.

Genes are a segment of ______ while genomes are the entire genetic material of an organism.

The nuclear genes are subject to ______ inheritance.

Cytoplasmic male sterility (CMS) is a condition under which a plant is unable to produce functional ______.

On the basis of the number of chromosomes, there are different kinds of cells in sexually reproducing ______.

In sexually reproducing plants, one member of each pair of chromosomes is derived from the maternal parent through the egg and the other from the paternal parent through the ______

Biparental inheritance results in each diploid cell containing two forms of each gene, known as ______

Mitosis occurs only in ______ cells

Through the application of appropriate chemicals and environmental conditions, plant cells can be made to proliferate into an amorphous mass called ______

Meiosis occurs only in specialized tissues in flowers of plants and produces daughter cells that contain the ______ number of chromosomes

A meiotic event called crossing over occurs in diplonema stage, resulting in genetic exchange between non-sister ______

The distance between two genes is defined as the recombination frequency between them.The unit of measure is the map unit or centimorgan (cM), which is defined as 1% of ______.

In a dihybrid cross, the percentage crossover (e.g., between genes A and B) is calculated as the percentage of recombinant offspring produced in a cross.For example, for 50 recombinants out of 400 offspring, it is calculated as (50/400) x 100 = 12.5%, thus there are 12.5 map ______.

Physical maps are constructed based on ______, the building blocks of DNA.

Genetic distance on a linkage map expressed in centimorgans is not directly correlated with the physical distance expressed in ______.

______ Acquaah, G.(2007).Principles of Plant Genetics and Breeding.Blackwell Publishing, Australia.F.Grewe et.al., (2014).Comparative analysis of 11 Brassicales mitochondrial genomes and the mitochondrial transcriptome of Brassica oleracea S.Tewari (2022).Cytoplasmic Male Sterility Stahl, F.W.(1979) Genetic recombination.Scientific American, 256: 91–101.

The percentage crossover in a dihybrid cross is calculated by the percentage of ______ offspring produced in a cross.