The DNA testing showed that the DNA from each of these bones, skull bones,determine indeed that they were Nicholas, Alexandra, and the three children.it is now generally accepted that the bodies of young Prince Alexei and his sister Princess Anastasia were partially cremated immediately after they <span>were shot. The soldiers then scattered their remains.</span>
Answer:
The function of the pollen tube is to lead sperm cells into the ovary.
Explanation:
In angiosperms, the pollen tube is a structure formed when the pollen grain comes into contact with the stigma and germinates, producing a tubal extension that is related to the embryonic sac where the female gametophyte is found.
The function of the pollen tube is to conduct the male gametophyte —which is found in the pollen— to the embryonic sac, in order to come into contact with the oosphere and produce fertilization.
The other options are not correct because the pollen tube:
- <em>Do </em><u><em>not create more pollen</em></u><em>.
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- <em>Do </em><u><em>not create more male spermatophytes</em></u><em>.
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- <u><em>Does not lead the eggs to the male spermatophytes</em></u><em>.</em>
The presence or absence of two antigens.
Answer:
Explanation:
Science is the study of the nature and behaviour of natural things and the knowledge that we obtain about them. A science is a particular branch of science such as physics, chemistry, or biology. Physics is the best example of a science which has developed strong, abstract theories.
Five key descriptors for the scientific method are: empirical, replicable, provisional, objective and systematic.
