D) Robert Hooke first discovered cells when observing cork under the microscope.
"Gravitational attraction" is initially responsible for the formation of the clumps of matter within this interstellar cloud.
<u>Answer:</u> Option C
<u>Explanation:</u>
About 4.6 billion years ago, the solar systems were a bunch of gases and dusts, referred to solar nebula. Gravity squeezed the material as it started to rotate, creating the sun at the middle of the fog.
The rest of the material began to accumulate with the sunrise. The smaller particles moved together to form larger particles that were connected by gravity. As lumps develop, gravity increases and turns into kinetic energy of moving particles that collide and produce heat.
Reclassification of fungi
Explanation:
Fungi were classified under kingdom plantae by the earlier taxonomists due to their similarities. Both of them were grown on the ground and fixed to the ground, they do not move, fungi like plants also produced fruiting bodies.
However, there were many physiological, morphological, genetic, and biochemical features which were unique and different from other kingdoms.
Although, the fungi contain similar features like vacuoles, secondary metabolites, myecelial root-like structures; fungi like plants do not have a complete vascular system.
Hence, the previous classification under plants was reconsidered and fungi were reclassified as a separate kingdom next to the protists and before the plantae kingdoms.
Answer:
from the image:
1. eight
2. four
3. less than
Explanation:
from the data given...
n= 4
where n= # of genes
&, the extreme # of segments= 
Genes, which make up a genotype are instructions for encoding a phenotype, expressed as proteins in translation.
...one gene may have 2 alleles
An allele is an alternate form of a particular gene. Genes can have multiple alleles, but in this case...
∴4 genes= 4 × 2=<u> </u><u>8 segments</u>
<u />
<u>Thus, each allele gives </u> 
= <u>1 segment</u>
<u></u>
<u></u>
