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AlekseyPX
3 years ago
10

During pollination _____.

Biology
2 answers:
worty [1.4K]3 years ago
5 0
B egg cells in the pollen unite with sperm cells in the ovary
jeyben [28]3 years ago
4 0

Answer:

A)

Pollen grows a tube down the style

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the answer is central nervous system

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3 years ago
Why is it impossible for male calico cats to exist
Kisachek [45]

Answer:

genetics

Explanation:

calico cats must also inherit a gene unrelated to the X and Y chromosomes that codes for white fur. Because male cats have one X chromosome with code for black or orange and one Y chromosome with no color genes, they cannot technically be calico. About one in every 3,000 calico cats is born a male, and, unfortunately, don't live as long as female calicos due to their genetic abnormalities. XXY Syndrome renders male calicos sterile and can be the root cause of many other health problems

8 0
3 years ago
Why are single-stranded binding proteins necessary for DNA replication?
Margarita [4]

Answer:

d.They prevent the two parental strands from coming together again.

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During the process of DNA replication, the two DNA strands should be separated from each other to serve as a template. To separate the two DNA strands, the helicase enzyme breaks down the hydrogen bonds between the complementary base pairs of the DNA strands. The process uses ATP as a source of energy.

Due to the presence of complementary base pairs, the separated DNA strands have a tendency to reanneal by the formation of hydrogen bonds. To prevent the reannealing of separated DNA strands, single stranded binding proteins bind to them. Binding to single stranded binding proteins to the separated DNA strands does not allow them to reanneal.  

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2 years ago
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The answer is sponge

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A genetic factor that blocks another genetic factor
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The answer is
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