A gene is said to be dominant, if
It is never expressed in any condition
It is expressed only in heterozygous condition
It expresses its effect only in homozygous stage
It is expressed both in homozygous and heterozygous conditions
Lampbrush chromosomes are visible
Length of $DNA$ in $E$. coli is
$tRNA$ is composed of about how many nucleotides
How many chromosomes are present in an unfertilized egg
A model that relates repetitive $DNA$ sequences and their transcripts of regulation in eukaryotes was proposed by