#Question id: 5562
#I Life Science/ Life Sciences Group – I-V
In an egg cell treated with a chemical that binds calcium and magnesium ions, the ________.
#Question id: 11413
#SCPH06 I Botany
Which of the following is NOT an attribute of a species that makes it vulnerable to extinction?
#Question id: 3667
#SCPH06 I Botany
In an ______________ plasmid, replication occurs in two stages. In the first stage, the double stranded circular plasmid DNA replicates to form another double-stranded circular DNA and a single-stranded circular DNA, In the second stage, the complementary strand is synthesized on the single-stranded DNA to make another double-stranded DNA.
#Question id: 7316
#I Life Science/ Life Sciences Group – I-V
Programmed cell death, or apoptosis, is an
essential part of animal development. In the nematode, with its invariant cell
lineage, particular cell lineages or particular cells within specific lineages
are destined to end in programmed cell death, and it was this feature that
allowed the identification of the process and the analysis of its genetic
control.
Which of the following combination of genes are correct?
#Question id: 5425
#SCPH06 I Botany
Two varieties of maize averaging 50 and 20 inches in height, respectively, are crossed. The F1 progeny is quite uniform averaging 35 inches in height. Out Of the 16 F2 plants, the 5 are 35 inches. What is the probable number of independent segregating polygenes involved in this trait?