I think it is control group
Ans.
Lac (lactose) operon in a type of bacterial operon, which shows a cluster of genes that are regulated by a single promoter. It is composed of an operator, promoter, a terminator, and three structural genes (lacA, lacY, and lacZ), which are responsible for the transport and breakdown of lactose.
The lac operon is an inducible operon as it gets activated in the presence of lactose and expressed its functional genes in the form of proteins (or enzymes) for lactose metabolism.
Thus, the correct answer to be fill in first blank is 'inducible' and in second blank is 'lactose.'
Answer:
b. 2
Explanation:
Humans have typically 23 pairs of chromosomes. Each pair is composed of a chromosome from the mother and another from the father. A specific locus in a chromosome is composed of two alleles. An allele inherited from the mother and the other allele inherited from the father.
No it is not possible for organisms in two different classes to be in the same genus
An air conditioning fan.
An airplane taking off.
A ballerina dancing in toe shoes.
A balloon popping.
The bell dinging on a microwave.
A boom box blaring.
A broom swishing.
A buzzing bee.
Car brakes squealing
A car crashing
A car door closing
A car engine
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Clog dancing
Computer mouse clicking
A copier machine
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Doorbell chiming
A dripping faucet
A foghorn
Firecrackers popping
An open fire crackling
Fireworks exploding
A flag flapping in a strong breeze
Flamenco dancing
A hair dryer
A jack hammer
Jingle bells
Meat sizzling on the grill
Paper crumpling
Paper tearing
Pouring milk into Rice Krispies™ cereal
Radiator pipes clanking
A radio
Railroad crossing signal
The siren on a fire engine
A slinky in motion
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Someone shuffling cards
A sonic boom
A tap dancer
A tea kettle whistling
Tires squealing when racing
A train moving on the tracks
Vacuum cleaner
Walking in autumn leaves
Water boiling
A waterfall
Waves crashing into a rocky shore
A whistle
Wind chimes
Etc.