Hi the T and B cells change after contact with the pathogen is a-- acquired-- immune response.
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Answer:
about 5% of the ocean had been explored as of this video being filmed in 2007.
Explanation:
He said it in the video
Answer:
b. the new species must be unable to breed with the original species.
Explanation:
By definition, species are defined as groups of similar organisms that can live and breed freely. This means that individuals in that species can interbreed and produce viable, fertile offspring. However, two different species cannot interbreed to produce fertile offspring due to biological barriers known as mechanisms of reproduction isolation.
These barriers are broadly classified as pre and postzygotic. Prezygotic barriers include the following:
- Habitat isolation: Two species occupy entirely different and distant habitats.
- Temporal isolation: Two species procreate at different times of the year.
- Behavioral isolation: Two species exhibit different mating behaviors.
- Gametic isolation: The gametes of the two species cannot fertilize.
- Mechanical isolation
Speciation, the production of an entirely new species, requires a maintenance of genetic diversity. Therefore, the new and original species cannot interbreed as this would limit the gene pool and decrease genetic variations.
It would belong to the Alkaline class
Answer:
After replication, identical copy of the Double stranded DNA is produced. Complementary strand for each of stand given below is
Explanation:
1. AACGTACGATCGATGCACATGCATGGCTACGC
Complementary strand
TTGCATGCTAGCTACGTGTACGTACCGATGCG
Protein encode: NVRSMHMHGY
2. CCCGGGTATGCATGTACGTACGTCGTATATCG
Complementary strand
GGGCCCATACGTACATGCATGCAGCATATAGC
Protein encode: PGYACTYVVY
3. CGCGATCGAGCGATCGACGAATGCCTAGTTTT
Complementary strand
GCGCTAGCTCGCTAGCTGCTTACGGATCAAAA
Protein encode: RDRAIDECLV
4. TTAAACGAGCTGCTAGCTATTTTTAAAACCCCG
Complementary strand
AATTTGCTCGACGATCGATAAAAATTTTGGGGC
Protein encode: LNELLAIFKTP
