<span>The question is asking "which includes the physical characteristics of an organism
Gene" and the answer is the phenotype. An organism's phenotype is basically its outward appearance and its phisical characteristics. In contrast, the other options, gene, allele and genotype, refer to the genetic make up of an organism - its genotype</span>
<h3>Anthrax is an uncommon, but deadly, disease produced by Bacillus anthracis, a spore-forming bacterium.</h3>
<u>Explanation</u>
- Anthrax bacteria usually enter the body through a skin wound. You can have become infected if you intake tainted meat or inhale the spores.
- ID50, the number of microorganisms needed to create a demonstrable infection by 50 percent.
- The ID50 for cutaneous anthrax attributable to Bacillus anthracis is 10-50 endospores, while the ID50 for inhalation anthrax is 10,000 to 20,000 endospores.
- Ciprofloxacin is the alternative treatment for anthrax when mutated forms are identified. It is suggested for post- inhalation anthrax.
<span>Sexual fertilization takes place
when a sperm from the male fuses into the egg cell of the female. <span>Human cells contain 23 chromosomes and has a total of 46
pairs of chromosomes. A male has a total of 46 pairs chromosomes and gives 23 chromosomes
while a female has a total of 46 pairs of chromosomes and gives 23 chromosomes
to the offspring. These pairing are responsible to the trait of the offspring. The
formation of both male and female gametes creates a zygote. They will start to
form at the fallopian tube, down to the oviduct and into the uterus as it
continues to divide. </span></span>
Well sickle cell disease requires two homozygous recessive alleles so you would have the disease but if your'e heterozygous you have the sickle cell trait.
