<span>The changes to the ratio of arm to leg length is that the length of the arms are shorter in relation to the length of the legs. This means that homo erectus hominins not only had a higher brain capacity, but also began to appear more human in their characteristics by showing a shorter arm length that we see in humans today.</span>
This process is called differentiation.
<h3><u>Explanation:</u></h3>
We know that during sexual reproduction, the mating results in fertilization between sperms and ova with production of zygote. This zygote is a single cell, which divides for thousands of time to produce a whole multicellular organism.
Each and every cell which is produced from the embryo have the same DNA and the same number of genes. But during the intrauterine life of the embryo, some cells start expressing some gene while others the different genes. This paves the way for organ differentiation and tissue differentiation. So the process by which the different cells of a multicellular organism expresses different gene inspite of having same DNA is called Differentiation.
Hello. You forgot the results of Courtney's observations. The observations are:
"Tendril # Week 1 Week 3 Week 6
1 1.2 cm 5.9 in 1.2 ft
2 2.0 cm 4.8 in 0.98 ft
3 0.8 cm 3.2 in 0.55 ft
4 0.2 cm 1.6 in 0.35 ft
5 1.5 cm 4.3 in 1.01 ft"
Answer:
Curtney's data show inconsistent units of measure.
Explanation:
Measurement units are ways of representing great physics such as speed, size, time, quantity, weight, among others. These units serve to quantify the matter and allow observations to be made.
It is important to note that the same units of measurement must be evaluated in the same experiment. For example, if we want to evaluate how much a plant can grow in 3 weeks, we have to evaluate the same unit of measure each week. If in the first week we evaluate the growth in centimeters, we have to evaluate the growth in the next weeks also in centimeters.
Courtney did not do this, and assessed the growth of the plants each week with different units of measure, which left her data inconsistent.