Answer:
There is no control.
Explanation:
If the scientist was testing something based on the different temperatures, they would need the amount of time in the oven to be the same for each cookie so that they can compare them. Without the times being the same, the scientist would not be able to tell whether the temperature or the time in the oven caused the differences in the cookies.
It can not make the combination of TT
Answer:
Embryological evidence
Explanation:
Deuterostomes is a group that includes echinoderms, hemichordates, and chordates. Although these animals exhibit a wide variety of body plans, they share a mouth secondarily formed during embryo development, which it is believed to be an evolutionarily derived character present between a common ancestor and all its descendants (i.e., a synapomorphy). This oral cavity is formed by the invagination of the ectoderm layer opposite to the blastopore of the gastrula.
The question is incomplete as it does not have the options which has been provided in the attachment.
Answer:
Option-3 and 4
Explanation:
In the given question, the table of the different nitrogen bases of a different organism has been provided in which the number of bases has been mentioned.
In the table, the amount of thymine is almost similar or equal to the adenine while the number of guanines almost equal to the cytosine for a particular species. This data follows the Chargaff postulates which state that adenine bind thymine and cytosine bind guanine therefore the number of complementary bases will be equal.
Thus, Option-3 and 4 are correct.
