Answer: True
Explanation:
The statement on Codominance is TRUE, while the one on incomplete dominance is also TRYE. So, the whole statement is TRUE.
In codominance, both phenotypes are expressed in homozygotes OR heterozygotes; but in incomplete dominance, the heterozygous exhibit a phenotype that is intermediate OR different from the two homozygotes.
So, TRUE is the answer
In 1923 when Hubble spotted a Cepheid variable star in what was called Andromoda Nebula and he was able to show that Andromoda was a million light years away ,which meant that it obviously wasn’t just a cloud of gas but a whole galaxy itself.And his discovery led to him becoming the most famous astronomer in the world just overnight ,because he brought us the fact that the “world” was bigger than we thought it was
Answer:
E. On in the presence of lactose and absence of glucose
Explanation:
Expression of lac operon synthesizes the enzymes required for catabolism of lactose sugar. When both glucose and lactose are available, glucose is preferred as a nutrient and the lac operon is not expressed.
Lac operon is expressed only when glucose is absent in the medium and lactose is present. If any of the two conditions deviate, the operon is not expressed.
In the absence of glucose and the presence of lactose, the repressor is rendered inactive to bind to the operator. RNA polymerase enzyme is free to bind to the promoter and continue the process of transcription.
The reduced levels of glucose increase the cAMP levels which in turn bind to the Catabolite activator protein (CAP). CAP is a positive regulator that binds to the promoter to facilitate the transcription of the operon by RNA polymerase.
Hypothalamus: a region of the forebrain below the thalamus which coordinates both the autonomic nervous system and the activity of the pituitary, controlling body temperature, thirst, hunger, and other homeostatic systems, and involved in sleep and emotional activity.
Insulin: a hormone produced in the pancreas by the islets of Langerhans, which regulates the amount of glucose in the blood. The lack of insulin causes a form of diabetes.
Predisposed: make someone liable or inclined to a specified attitude, action, or condition.
