Crossing over in diploid organisms is responsible for
dominance of genes
linkage between genes
recombination of linked genes
segregation of alleles
C.
recombination of linked genes
Crossing over is a process that produces new combinations (recombination) of genes by interchanging of corresponding segments between non-sister chromatids of homologous chromosomes ie, the crossing over is responsible for recombination of linked genes in diploid organisms.
What is true about a gamo spermous apospory?
Formation of embryo from egg of embryo sac proliferated from a nucellar cell
Formation of embryo from egg of embryo sac formed directly from megaspore mother cell
Formation of embryo directly from nucellus
Formation of embryo directly from integument
A simple technology has been developed in India for plant breeders and farmers to use two plants as biofertilizers for growing rice. These are
Azotobacter and Rhizobium
Chlorella and Spirulina
Azolla and nitrogen fixing blue-green algae
Riccia and Marchantia
Plasmid is
small extrachromosomal circular self replicating DNA that can carry genes into host organism
bacteriophage
DNA found in mitochondria
DNA incorporated in bacterial chromosome
The process of multiplication of DNA from DNA is known as
replication
transversion
transcription
translation
Anthesis means
growth of pollen tube inside the carpel
dehiscence of anthers
opening of floral bud
emergence of anthers
Seed which are able to withstand reduction in moisture and temperature are called
dormant seeds
recalcitrant seeds
orthodox seeds
non- viable seeds
