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3 years ago

Which is one factor that contributes to the formation of polar, temperate, and tropical zones?

Biology

2 answers:

gladu [14]3 years ago

5 0

A. the angle of the sun's rays

mr Goodwill [35]3 years ago

3 0

Answer:

A, angle of the Suns rays

Explanation:

a majority of climates are determined by relative location to the equator, which is the hottest part of the planet.

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Coat color in rabbits is under the control of a single gene with

Mashcka [7]

Answer: a) Cch x Ccch

b) Ccch x Cc

c) Cch x cchch

d) cchc x chc

Explanation:

Data:

Coat color in rabbits is under the control of a single gene with

four alleles: C (full gray color); cch (chinchilla, light gray); ch

(Himalayan, white with black extremities); and c (albino, absence

of pigmentation).

The dominance hierarchy is represented as: C >cch > ch > c.

Possible genotypes:

For full gray color: CC (Gray), Ccch (Gray-2), Cch (Gray-1), Cc (Gray-3). The allele "C" dominates over the other three alleles, so in every combination where "C" is present, the animal will be fully grayed.

For light gray color/Chinchilla: cchcch (Chinchilla), cchch (Chinchilla-1), cchc (Chinchilla-2). The allele "cch" dominates over "ch" and "c", but not over "C". So if the allele "C" is combined with "cch", the animal will be fully grayed, but in any other combination with "cch", the animal will be light grayed.

For white with black extremities/Himalayan: chch (Hymalayan), chc (Hymalayan-1). The allele "ch" that determines the Himalayan color is only dominant over the allele "c". But in combination with any other allele, "ch" behaves as a recessive one.

For albino: cc. In the presence of any of the other alleles, the allele "c" always behaves as a recessive one. The only possibility of getting an albino animal is if "c" combines with another "c".

Crosses:

a) Gray-1 x gray-2

3/4 gray : 1/4 chinchilla

Parental) C ch x C cch

Gamates) C ch C cch

Punnet Square) C cch

C CC Ccch

ch Cch cchch

F1 Genotype) 1/4 CC

1/4 Cch

1/4 Ccch

1/4 cchch

F1 Phenotype) 3/4 Fully Gray animals (CC, Cch, Ccch)

1/4 Chinchilla animals (cchch)

b) Gray-2 x gray-3

3/4 gray : 1/4 chinchilla

Parental) C cch x C c

Gamates) C cch C c

Punnet Square) C cch

C CC Ccch

c Cc cchc

F1 Genotype) 1/4 CC

1/4 Cc

1/4 Ccch

1/4 cchc

F1 Phenotype) 3/4 Fully Gray animals (CC, Cc, Ccch)

1/4 Chinchilla animals (cchc)

c) Gray-1 x chinchilla-1

1/2 gray : 1/4 chinchilla : 1/4 himalayan

Parental) C ch x cchch

Gamates) C ch cch ch

Punnet Square) C ch

cch Ccch cchch

ch Cch cchch

F1 Genotype) 1/4 Ccch

1/4 Cch

1/4 cchch

1/4 chch

F1 Phenotype) 2/4=1/2 Fully Gray animals (Ccch, Cch)

1/4 Chinchilla animals (cchch)

1/4 Himalayan animals (chch)

d) Chinchilla-2 x himalayan

1/2 chinchilla : 1/4 himalayan : 1/4 albino

Parental) cchc x chc

Gamates) cch c ch c

Punnet Square) cch c

ch cchch chc

c cchc cc

F1 Genotype) 1/4 cchch

1/4 cchc

1/4 chc

1/4 cc

F1 Phenotype) 2/4=1/2 Chinchilla animals (cchch, cchc)

1/4 Himalayan animals (chc)

1/4 Albino animals (cc)

6 0

3 years ago

What kinds of lipids make up the bilayer that forms a cell membrane ?

KIM [24]

The answer you are looking for is phospholipid

4 0

3 years ago

The single stream recycling program that they partner with makes it convenient to

cupoosta [38]

Answer:

Putting items in the recycling bin that can’t be recycled can contaminate the recycling stream. After these unrecyclable items arrive at recycling centers, they can cause costly damage to the equipment. Additionally, after arriving at recycling centers, they must be sorted out and then sent to landfills, which raises costs for the facility.

Explanation: d

8 0

2 years ago

C cells of the thyroid gland secrete __________. C cells of the thyroid gland secrete __________. tetraiodothyronine cortisol ca

Leni [432]

C cells of the thyroid gland secrete calcitonin.

<h3>What does C cells of thyroid gland produce?</h3>

The thyroid follicle, which is the gland's active component, is encircled by a single layer of epithelial cells, and the lumen is stuffed with colloidal material.
It includes parafollicular cells, or C cells, which release calcitonin.
The C-cells of the thyroid gland secrete calcitonin, a 32 amino acid hormone.
When the concentration of blood calcium has grown over the usual range, the thyroid gland releases the hormone calcitonin, which lowers the level.
The parafollicular cells, sometimes referred to as the C cells, of the thyroid gland are the principal producers of this polypeptide hormone, which has 32 amino acids.

Learn more about thyroid gland here:

brainly.com/question/27523862

#SPJ4

Disclaimer: The question was given incomplete on the portal. Here is the complete question.

Question: The C cells of the thyroid gland secrete

a) TSH.

b) parathormone.

c) thyroxine.

d) triiodothyronine.

e) calcitonin

6 0

1 year ago

Which statement accurately describes the tissues indicated by the line in the microscopic image?

amid [387]

A. The connective tissues that protect the inside of the arteries and veins.

3 0

2 years ago