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2 years ago

Lab: Mineral and Rock Classification

Biology

1 answer:

ser-zykov [4K]2 years ago

5 0

Rocks are objects mainly composed of minerals, which are categorized as igneous, metamorphic and sedimentary.

Rocks are objects composed of two or more different types of minerals, which reacted over a geological scale.

Igneous rocks are formed by minerals found in magma when it crystallizes, whereas sedimentary rocks are formed by geological processes such as erosion.

Finally, metamorphic rocks underwent high heat/pressure, or also mineral-based processes on the geological scale.

In conclusion, rocks are composed of minerals and categorized as igneous, metamorphic and sedimentary.

Learn more about metamorphic rocks here:

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Determine the phenotypic ratios of the offspring. 9 yellow-inflated : 3 yellow-constricted : 3 green-inflated: 1 green-constrict

skad [1K]

From a cross between dihybrid individuals, whose diallelic genes code for one trait each, expressing complete dominance, the phenotypic ratio is B) 9 green-inflated : 3 green-constricted : 3 yellow-inflated :1 yellow-constricted.

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Since I do not have the cross, I will assume the cross involves two dihybrid individuals by looking at the options.

So, let us picture the situation,

Two diallelic genes code for one trait each, color and inflated/constricted pods.
G allele is the dominant and codes for green pods
g allele is recessive and codes for yellow pods
I is the dominant allele and codes for inflated pods
i is recessive and codes for constricted pods
These genes are not linked

1st Cross) Two h0m0zyg0us individuals

Parental) GGII x ggii

F1) 100% GgIi

2nd Cross) Selfcross between F1 individuals

Parentals) GgIi x GgIi

Gametes) GI, Gi, gI, gi

GI, Gi, gI, gi

Punnett square) GI Gi gI gi

GI GGII GGIi GgII GgIi

Gi GGIi GGii GgIi Ggii

gI GgII GgIi ggII ggIi

gi GgIi Ggii ggIi ggii

F2) Genotype

1/16 GGII
2/16 GGIi
1/16 GGii
2/16 GgII
4/16 GgIi
2/16 Ggii
1/16 ggII
2/16 ggIi
1/16 ggii

Phenotype

9/16 G-I- ⇒ Green and Inflated
3/16 G-ii ⇒ Green and constricted
3/16 ggI- ⇒ Yellow and inflated
1/16 ggii ⇒ Yellow and constricted

Phenotypic ratio 9:3:3:1

Options

A) 9 yellow-inflated : 3 yellow-constricted : 3 green-inflated: 1 green-constricted ⇒ NOT CORRECT

B) 9 green-inflated : 3 green-constricted : 3 yellow-inflated : 1 yellow-constricted ⇒ CORRECT

C) 9 green-constricted : 3 green-inflated : 3 yellow-constricted : 1 yellow-inflated ⇒ NOT CORRECT

D) 9 yellow-constricted : 3 yellow-inflated : 3 green-constricted : 1 green-inflated ⇒ NOT CORRECT

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3 years ago

How can evolution lead to reproductive success?

Nat2105 [25]

Answer:

Evolution in humans is happening spontaneously and the development of species can improve the capability of offspring and the intelligence of species. All animals today are evolutionary, we came from bacteria to being are millions of times the size of that organism with millions of years going through evolution. We have gone from splitting our cells to make more, to creating life to another to do the same.

Explanation:

7 0

4 years ago

What are convergent boundaries?

boyakko [2]

Answer:

Explanation:

A convergent boundary (also known as a destructive boundary) is an area on Earth where two or more lithospheric plates collide. One plate eventually slides beneath the other, a process known as subduction. The subduction zone can be defined by a plane where many earthquakes occur, called the Wadati–Benioff zone.[1] These collisions happen on scales of millions to tens of millions of years and can lead to volcanism, earthquakes, orogenesis, destruction of lithosphere, and deformation. Convergent boundaries occur between oceanic-oceanic lithosphere, oceanic-continental lithosphere, and continental-continental lithosphere. The geologic features related to convergent boundaries vary depending on crust types.

Plate tectonics is driven by convection cells in the mantle. Convection cells are the result of heat generated by radioactive decay of elements in the mantle escaping to the surface and the return of cool materials from the surface to the mantle.[2] These convection cells bring hot mantle material to the surface along spreading centers creating new crust. As this new crust is pushed away from the spreading center by the formation of newer crust, it cools, thins, and becomes denser. Subduction begins when this dense crust converges with less dense crust. The force of gravity helps drive the subducting slab into the mantle.[3] As the relatively cool subducting slab sinks deeper into the mantle, it is heated, causing hydrous minerals to break down. This releases water into the hotter asthenosphere, which leads to partial melting of asthenosphere and volcanism. Both dehydration and partial melting occurs along the 1,000 °C (1,830 °F) isotherm, generally at depths of 65 to 130 km (40 to 81 mi).[4][5]

Some lithospheric plates consist of both continental and oceanic lithosphere. In some instances, initial convergence with another plate will destroy oceanic lithosphere, leading to convergence of two continental plates. Neither continental plate will subduct. It is likely that the plate may break along the boundary of continental and oceanic crust. Seismic tomography reveals pieces of lithosphere that have broken off during convergence

3 0

3 years ago

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which statements are true of heterogeneous mixtures? 1) they settle out. 2) the proportions of solute to solvent may vary. 3) th

Sindrei [870]

The statements that are true of heterogeneous mixtures are: they settle out and the proportions of solute to solvent may vary. The correct answer is option A. 1 and 2. Heterogeneous mixtures are considered mixtures wherein the components are not uniform and still retain their properties. Characteristics of heterogeneous mixtures are: the ratio of solute and solvent is not equal, the substances can be separated physically and they still retain their properties even if mixed with another substance.

5 0

3 years ago

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Someone pls help me ill give out brainliest pls don’t answer if you don’t know

Mashcka [7]

Answer:

Explanation:

because of the displacement

3 0

3 years ago