50 chromosomes
A sperm cell is haploid (n) and a zygote is diploid (2n) so 25(2)=50 chromosomes
The terrestrial gastropods are the only mollusks that have adapted to all the habitats of the Earth. They dwell in areas of high altitude, mountainous regions, hot and cold places. Land snails live and perform their vital functions on the ground and not in the sea or bodies of fresh water.
Answer:
The answer is not in any of the options and is the following:
to eliminate any remaining Hfr cells.
Explanation:
In a medium that has a streptomycin antibiotic it is used to kill Hfr donor cells after the conjugation is interrupted. This is entirely due to the streptomycin sensitivity allele (str-s) which are found in Hfr strains. The presence of the streptomycin resistance allele, located in the receptor, is used for the specific destruction of Hfr donor cells after conjugation occurs.
The correct answer is: d.Most people with this disorder are female.
Antisocial personality disorder - ASPD also called sociopathy is a personality disorder in which person doesn’t pay attention to the rights of others. The behavior of people with this disorder :
• Consistently not showing no regard for right and wrong,
• Ignoring the feelings of others,
• Antagonization and, manipulation,
• Not showing guilt or remorse .
Sometimes even destructive and criminal behavior might appear.