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DNA ligase is | [
"an enzyme that joins fragments in normal DNA replication",
"an enzyme of bacterial origin which cuts DNA at defined base sequences",
"an enzyme that facilitates transcription of specific genes",
"an enzyme which limits the level to which a particular nutrient reaches"
] | [
"A"
] | [
0
] | [
"an enzyme that joins fragments in normal DNA replication"
] |
A gene showing codominance | [
"has both alleles independently expressed in the heterozygote",
"has one allele dominant to the other",
"has alleles tightly linked on the same chromosome",
"has alleles expressed at the same time in development"
] | [
"A"
] | [
0
] | [
"has both alleles independently expressed in the heterozygote"
] |
Which of the following conditions does not show multifactorial inheritance? | [
"Pyloric stenosis",
"Schizophrenia",
"Spina bifida (neural tube defects)",
"Marfan syndrome"
] | [
"D"
] | [
3
] | [
"Marfan syndrome"
] |
The stage of meiosis in which chromosomes pair and cross over is: | [
"prophase I",
"metaphase I",
"prophase II",
"metaphase II"
] | [
"A"
] | [
0
] | [
"prophase I"
] |
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