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krok68 [10]
3 years ago
14

The adaptations of a pelican include its long, pouch-like beak. Why is the beak of the pelican an example of an adaptation?

Biology
1 answer:
Anna35 [415]3 years ago
4 0

Answer:

B. All birds have beaks, but the beaks vary among different species

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Consider 2 genes in peas- gene controlling seed color- yellow Vs green; gene controlling seed texture-smooth Vs wrinkled. Assume
Luden [163]

Answer:

Smooth & yellow: 9

smooth & green: 3

wrinkled & yellow: 3

wrinkled & green: 1

Explanation:

Gene controlling seed color are yellow Vs green

Gene controlling seed texture are smooth Vs wrinkled

In F1 generation, A true breeding smooth green plant (SSyy) is crossed to a true breeding wrinkled yellow (ssYY)

Off spring in F1 generation are smooth yellow (SsYy)

This means smooth texture is dominant over wrinkled texture and yellow color is dominant over green  

in F2 generation, the cross is carried between SsYy

SY         Sy        sY          sy

SY SSYY SSYy SsYY SsYy

Sy SSYy SSyy SsYy Ssyy

sY SsYY SsYy ssYY ssYy

sy SsYy Ssyy ssYy ssyy

Smooth & yellow: 9

smooth & green: 3

wrinkled & yellow: 3

wrinkled & green: 1

4 0
2 years ago
Name three organelles or structures found in plant cells but NOT in animal cells. Group of answer choices nucleus chloroplast mi
BARSIC [14]

Answer:

Cell wall, chloroplast, and central vacuole

Explanation:

Cell wall, chloroplast, and central vacuole are present in a plant cell but not in the animal cell.

Nucleus, cell membrane, and cytoplasm present in both plant and animal cells.

6 0
2 years ago
Which pure form of carbon is used in pencil lead? charcoal coal fullerene graphite
kotegsom [21]

Graphite is well known to be pencil lead - You might actually learn this in Chemistry/Physical Science like we did!

Charcoal & coal you cannot use - you could but it'd be difficult and irritating.

Fullerene is the third form of carbon. It can be used for electronics AND medicine. Amazing right??

8 0
3 years ago
Prior to its export from the nucleus, what modifications must be made to a mRNA molecule in eukaryotic cells?
romanna [79]
The mRNA needs to copy the gene sequence of the dna before it leaves the nucleus to the tRNA and rRNA
6 0
3 years ago
The "brain" of the cell is called the
BARSIC [14]

A. nucleus because it is in the center of the cell and it’s the core of the cell

6 0
3 years ago
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