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IceJOKER [234]
3 years ago
15

3 stimuli that a bird responds to

Biology
1 answer:
Luden [163]3 years ago
4 0
Weather condition , temperature , and food ability 
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Which of theses is NOT a plant organ?<br> stem<br> root<br> vacuole<br> leaf<br> flower
Lerok [7]
Flower because the others are a organ which make the plant live but the flower is more of a decorative thing to make the plant stand out
7 0
3 years ago
Describe neurulation and relate the components of a fully developed nervous system to the neural tube and neural crest.
STatiana [176]
Neurulation is termed as the folding process within which is invertebrates embryos. It includes the transformation of the neural plate into the neural tube. At this transformation of the neural plate into the neural tube. At this stage, the embryo is known as neurula. 
The process starts when notochord induces the formation of the central nervous system and this is by signaling the ectoderm germ layer which is above and it forms flat and thick neural plate.
The work of neural tube and then later differentiates to the brain and spinal chord which then forms central nervous system.
Neural tube portions forms by two different processes. for example secondary neurulation and primary neurulation.
Secondary neurulation the tube forms by hollowing out of the interior of the solid precursor
In primary neurulation, the neural plates crease inward until when the edges come into fuse and contact
4 0
4 years ago
Which RNA nucleotide is complementary to adenine?
Yakvenalex [24]

Answer:

It would be uracil

Explanation:

RNA base pairs:

A - U

G - C

5 0
3 years ago
Read 2 more answers
If you have the frequency of the recessive allele for a gene, how do you get the frequency of the dominant allele?
Rzqust [24]

Answer:

The frequency of the recessive allele. Answer: Since we believe that the homozygous recessive for this gene (q2) represents 4% (i.e. = 0.04), the square root (q) is 0.2 (20%).

The frequency of the dominant allele. Answer: Since q = 0.2, and p + q = 1, then p = 0.8 (80%).

The frequency of heterozygous individuals.

Explanation:

8 0
3 years ago
Biologists use ball-and-stick models to study complex molecules by representing atoms with balls and bonds with sticks. DNA
Ludmilka [50]

Answer:

Some kinds of atoms that are found in DNA must be left out of the models. DNA has so many atoms that the size and cost of a model could be too great. It is impossible to distinguish different kinds of atoms with models.

Explanation:

7 0
4 years ago
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