D. 9
Notice that diploid cells
which 18 are the complete number of chromosome pair of the organism. This usually
happens under cell divison –mitosis which process of replicating oneself to
produce another like cell. Meiosis occurs in gametes, sex cells. Their respectively
called spermatogenesis (sperm cells) and oogenesis (egg cells). These cell
division –meiosis produces haploid cells, in which in words “half” from the
complete cell chromosome number, hence, these haploid cells only produce half number
or one set of chromosome (9) instead of the complete pair which in this case,
18.
I think it's follicle-stimulating hormone
Answer: it is difficult because it is necessary to understand some concepts used in a system. For example what is a boundary, and environment which can be positive or negative, etc. A sample could be the course OpenLearn that provides an example of Computing & IT.
Explanation:
DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C). The order of these bases is what determines DNA's instructions, or genetic code.
Answer:
True
Explanation:
Granite is an igneous rock that forms when magma cools relatively slowly underground. It is usually composed primarily of the minerals quartz, feldspar, and mica. When granite is subjected to intense heat and pressure, it changes into a metamorphic rock called gneiss. ( national geographic)