1: a) Cytokinesis
2: b) Prophase: Fibers form the mitotic spindle
3: It is the system that scientists use to name living organisms. It is beneficial to use this naming system because it is very precise and narrows it down to one specific organism. Another reason is because the roots used to make up one of the names can be compared to others, so you can see the relationship between two different organisms.
4: a) <span>Organisms once thought to be unrelated may be found to be related.
5: b) eliminating waste through the cell membrane.
I hope this helps you out.
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Answer:
1). Xeroderma pigmentation.
2). Ataxia-telangiectasia.
Explanation:
DNA repair processes include all the processes, which help in identification and correction of errors or damages in DNA. Defects in DNA repair mechanisms that increase risks for developing cancers and various other disorders. Two conditions related to faulty DNA repair are:
1). Xeroderma pigmentation (XP): XP can be defined as a genetic disorder, due to mutations in genes involved in repair processes. It leads to severe sunburn and freckling due to sun exposure, dry skin and skin pigmentation. People having xeroderma pigmentation are prone for skin cancer.
2). Ataxia-telangiectasia (AT): AT is caused bu mutation in ATM gene (ataxia-telangiectasia mutated) gene, which in involved in nucleotide-excision repair pathway. It leads to severe disability in children and increases risk for developing lymphomas and leukemia.
Answer:
Dr Poole worked in Gorongosa park and he made the observation of most females being tuskless as a result of the selective pressure caused by poaching.
Although male elephants are also affected by this in which some don’t also have tusks the percentage is low when compared to the female elephants.
The noble gas present in relatively large connections in the atmosphere is ARGON
