When a scientific experiment is carried out in a controlled setting, all variables are kept the same except for the C. experimental. Experimental variables are the things you are studying in the experiment and it is the only variable you can change.
Answer:
A,C, D
Explanation:
Bacteria that acquired a mutation that conferred drug- resistance had a growth advantage over non-resistant bacteria.
Between time points C and D, drug-resistant bacteria were reproducing faster than non-drug resistant bacteria were dying.
The few drug-resistant bacteria in the population reproduced, quickly leading to a large drug- resistant population.
There is no indication that a second antibiotic was used, so it is not possible to assume a second drug-resistance mutation occurred. There is also no indication that antibiotics were discontinued.
The genetic data present in the DNA of an organism is different from the parent DNAs.
Explanation:
The large number of varied combination of genes are produced through the reproduction procedure. In the process of Meiosis, gametes are produced in the form of sperms and eggs. The alleles of gametes get separated and units randomly with fertilization of gametes.
In this way reproduction causes variation in genes. In humans some variations of genes are - the skin and hair color. This variation leads to a trait of an organism.
can define the product/objective.
Answer:
DNA only.
Explanation:
Both DNA and RNA are built with a sugar backbone, but whereas the sugar in DNA is called deoxyribose, the sugar in RNA is called simply ribose. The ‘deoxy’ prefix denotes that, whilst RNA has two hydroxyl (-OH) groups attached to its carbon backbone, DNA has only one, and has a lone hydrogen atom attached instead.
