Answer:
cells specialize to form specific tissue and organs because all cells have the same DNA. stem cells can develop into every type of cell inside the body.The cell is the basic unit of structure and function in all living organisms.
Answer:
1 monosomy
2 trisomy
3 Down syndrome
4 Turner syndrome
5 non-disjunction
6 metaphase
7 twenty-two
8 largest (chromosome 1)
9 smallest (chromosome 22)
10 karyotype
Explanation:
Non-disjunction during meiosis I or II occur when homologous chromosomes or sister chromatids refuse to separate. This makes the resulting gametes to have too many or too few chromosome numbers in their genomes.
A gamete with too few chromosome number that participates in fertilization with a normal gamete will result in a zygote with abnormally less chromosome number. This situation is referred to as monosomy. Whereas, the fusion of a gamete with too many chromosome number with a normal gamete will result in a zygote with too many chromosome, a situation known as trisomy.
The manifestation of monosomy and trisomy in humans results in Turner and Down syndromes respectively.
Humans have 23 pairs of chromosomes out of which a pair determines maleness or femaleness - the sex chromosome. Other chromosomes are referred to as autosomes. Hence, there are 22 autosome pairs and 1 pair of sex chromosome.
Chromosomes are studied by karyotyping, a process that involves photographing chromosomes at the metaphase stage of the cell cycle, cutting them out, and then arranging them in decreasing order of size.
White blood cells and also called leukocytes, are a key part of the body's immune system, which is the body’s defense system against infection.
Answer: hydrogen peroxide
Explanation:
To prevent diseases from being transmitted as well as infections, it's vital to control such microorganisms and this.vsn be done through physical and chemical agents.
Physical agents include filtration, radiation, pasteurization,HEPA filters, desiccation, and osmotic pressure. Chemical agents are using antiseptics, disinfectants, antibiotics, etc.
It should be noted that hydrogen peroxide isn't a physical agent for controlling microbial growth.
