Answer:
C. Sex chromosomes
Explanation:
Sex chromosome is a type of chromosome that is responsible for the characteristics of an individual such as ️eye color, Hair type and ️child eye color. The sex of an individual i.e. male or female is also determined by sex chromosomes. Every individual has two pairs of chromosomes, one from father and one from mother. These pairs of genes determine certain physical features or traits in an individual.
It typically takes around 12 years of schooling
Answer:
d. 
Explanation:
The keywords <em>how</em><em> </em><em>many</em><em> </em><em>ways</em>,<em> </em>signal combinations, especially since order does <em>not</em> matter, so we use the combination formula:
![\displaystyle \frac{n!}{[-r + n]!r!} =\: _nC_r \\ \\ \frac{10!}{[-6 + 10]![6!]} = \frac{3628800}{[4!][6!]} = \frac{3628800}{[24][720]} = \frac{3628800}{17280} = 210](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Cfrac%7Bn%21%7D%7B%5B-r%20%2B%20n%5D%21r%21%7D%20%3D%5C%3A%20_nC_r%20%5C%5C%20%5C%5C%20%5Cfrac%7B10%21%7D%7B%5B-6%20%2B%2010%5D%21%5B6%21%5D%7D%20%3D%20%5Cfrac%7B3628800%7D%7B%5B4%21%5D%5B6%21%5D%7D%20%3D%20%5Cfrac%7B3628800%7D%7B%5B24%5D%5B720%5D%7D%20%3D%20%5Cfrac%7B3628800%7D%7B17280%7D%20%3D%20210)
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* This is mathematics, not <em>health</em>.
Vaccinations are mainly used to prevent the spread of
a. viral diseases.
a. viral diseases.(<span>measles or <span>hepatitis B...)</span></span>
