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Alex_Xolod [135]
3 years ago
13

The three horizons in Figure 7-1 make up a soil ____________________.

Biology
2 answers:
ivolga24 [154]3 years ago
6 0
The three horizons make up a soil profile. A soil profile is an overview that shows each of the soil's horizons. A soil horizon is each distinct layer of a soil composition. 
kotykmax [81]3 years ago
3 0
Multiple soil horizons make up a soil profile. Soil horizons are distinguishable regions of soil. They run parallel to the surface and have different characteristics. The soil horizons include the A horizon, E horizon, B horizon and C horizons.
The soil profile is a vertical cross section showing these horizons.
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What are the most likely percentages for offspring of two red/white-feathers parents?
weeeeeb [17]

Answer:

The question lacks options, the options are:

parents?

A.100% red/white-feather chickens.

B.50% white-feather chickens and 50% red/white-feather chickens.

C.33% white-feather chickens, 33% red-feather chickens, and 33% red/white-feather chickens.

D.25% white-feather chickens, 25% red-feather chickens, and 50% red/white-feather chickens

The Correct answer is D

Explanation:

According to the question, the hybrid chicken has a mixture of red and white feather phenotypes expressed at the same time. This tells us that the red and white alleles are CODOMINANT in the chicken i.e. none is dominant or recessive over the other.

Let's assume that (R) allele is the red feather colour while (r) allele is for white feather colour. Therefore, the red/white feathered chicken will have a Rr genotype. In a cross between two red/white feathered chicken (Rr), the following offsprings will be produced RR, Rr, Rr and rr

RR- Homozygous red feather d chicken (1/4 × 100=25%)

Rr- Hybrid Red/White feathered chicken (2/4 × 100=50%)

rr- Homozygous white feathered chicken (1/4 × 100=25%)

8 0
2 years ago
The fusion of gametes is called
kotegsom [21]
It is called a zygote.
7 0
3 years ago
Read 2 more answers
Symptoms of malaria appears when
elena-s [515]
The symptoms do not appear immediately after the entry of sporozoites because hemozoin is not released. Only after the release of hemozoin the malarial symptoms are released. For most people, symptoms begin 10 days to 4 weeks after infection, although a person may feel ill as early as 7 days or as late as 1 year later.
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What is a chromosome? ( In simple terms please)
ratelena [41]
Well the definition in an actual dictionary or scientific book is quite confusing, so to put it simply:
A chromosome is a DNA molecule with part or all of the genetic material of an organism.

If that makes any sense.
That’s really as simple as I know it.
Chromosomes are complex, so a simple definition doesn’t come easy.
Happy to help!
~Brooke❤️
3 0
3 years ago
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All living things must maintain a strict internal temperature. There can be serious consequences if the internal temperature dev
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I think the answer is B. Homeostasis.
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