Answer:
a) Pair of restriction enzymes: EcoRI and BamHI
b) The fragment of cDNA that contains YFPH ORF
c) The reverse transcriptase
Explanation:
a) Restriction enzymes are defined as those enzymes that cut DNA. These enzymes recognize a target sequence and cut DNA near those sequences. Choosing these two restriction enzymes allows obtaining a full length protein.
b) An intron is defined as a part of the gene that does not code for any amino acid. The regions in a sequence that are expressed in proteins are called exons because they are expressed, and human genomic DNA has introns, which would not be part of the desired protein.
c) Reverse transcriptase is a DNA polymerase type enzyme, its function is to synthesize double-stranded DNA using single-stranded RNA as a template. This enzyme aids in the formation of the double-stranded DNA when RNA has undergone reverse transcription in the cDNA strand. Reverse transcription means the synthesis of DNA from RNA.
DNA replication occurs in the synthesis stage and is followed by the gap 2 stage
Answer:2 creeper, I normal
Explanation: According to mendelian law when 2 creeper are crossed we should have 3 creeper and 1 normal but because homozgous allele is lethal(lethal means allele that are deleterious and it causes the death of the individual carrying it) it leads it death and we have 2 creeper and 2 normal. The creeper are heterozyous having two different allele.
For everywhere that homozygous individual that are dominant for creeper occur it will always leads to there death because the allele are lethal
Answer:
C
Explanation:
Not all life requires sleep (think plants, they don't need sleep)
What is a fossil?
Fossils are fossilised (petrified) remains of animals/plants. A fossil though, is only a fossil, when it is from a different geological era.
How does that relate to evolution?
Evolution and fossils are very related. When we scan the DNA of different fossils, we find that the DNA can be similar to living species we have today, which helps us trace back their origins.
Tracing back a species origins is not something we do just to see how that species changed along time. When we manage to make an evolutionary chart of a species, we know how they changed, what they changed, and maybe not more, but very importantly, when the previous species were extinguished. If we know when they were extinguished, we can find out what caused that extinction:
- A lack of adaptation.
- Lack of resources.
- Temperature changes.
- Increase of predators.
- Deadly migrations.
- Other natural disasters.
So, in other words, by studying one species, we can study our own planet.
Hope it helped,
BioTeacher101