They have two identical alleles for a gene, so in a genetic cross, each parent contributes only one form of a gene, making inheritance patterns more detectable.
Human egg cell
But human egg cell is the one of the largest cells in the human body that can be seen with naked eye. i.e we are able to see it without the help of a magnification device. The size of this cell is about 0.12 mm in diameter.
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Scientists have predicted that long-term effects of climate change will include a decrease in sea ice and an increase in permafrost thawing, an increase in heat waves and heavy precipitation, and decreased water resources in semi-arid regions.
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Are there options to chose from? Like multiple choice answers?? If So, I can try and Answer for you :)
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Anatomy. Species may share similar physical features because the feature was present in a common ancestor (homologous structures).
Molecular biology. DNA and the genetic code reflect the shared ancestry of life. ...
Biogeography. ...
Fossils. ...
Direct observation.
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