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2 years ago

Even though streams that flow through valleys generally move very fast, the stream load is

Biology

1 answer:

mihalych1998 [28]2 years ago

6 0

Answer:

Explanation:

The gradient in bed load is mostly made up mostly of gravels and sands, broken down versions of larger boulders and rocks, which are most commonly found in mountainous areas. Streams with low gradients cannot carry bed load down stream because it moves slowly and without much force. Gravels and sands couldn't move downstream because the water flow isn't strong enough to move them or to keep them in motion.

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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

2 years ago

What is meant by the term “magic mirror” as it is used in the intelligent planet?

ss7ja [257]

A secretary who is capable of performing accurate research a resource that responds accurately and intuitively

4 0

2 years ago

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Which of the following carries messages to parts of the body

ycow [4]

The brain i think that is correct

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2 years ago

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What cell structure causes the shape of chloroplasts to be round?

morpeh [17]

Answer: A plant cell has a cell wall, a central vacuole, and phosphids or chloroplasts. The cell wall provides structural support and protection.

4 0

2 years ago

The synaptic cleft is the area between the a. soma of one neuron and the dendrite of another neuron. b. axon of one neuron and t

Aleonysh [2.5K]

Answer: B

Explanation:

7 0

3 years ago