How does the sun produce heat and light for the earth?

1 answer:

7 0

The sun produces a massive amount of energy due to the nuclear fusion reaction in its core, in which the element hydrogen is converted into helium. The temperature in the core is about 13,600,000 degrees Kelvin, and this heat is transferred into the next layer through thermal radiation.

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Explain Mendel's law of independent assortment and how the 9:3:3:1 phenotypic ratio among the F2 of a dihybrid cross provides ev

GrogVix [38]

Answer:

Explanation:

Mendel's law of independent assortment state that two different genes assort independently in gamete formation.

To reach this conclusion, one has to do a dihybrid cross. This means that two genes responsible for different traits need to be analyzed at the same time.

1) Starting with a parental generation of a cross between two pure lines (homozygous for both genes) with different traits, a plant with yellow and round seeds (YYRR) and another with green and wrinkled seeds (yyrr). The F1 will be phenotypically homogeneous (yellow and round), and genotypically heterozygous (YyRr).

2) If the individuals from the F1 are crossed with one another, we have to do a Punnett Square to determine the phenotypic ratio of the F2.

If the genes assort independently, the F1 individuals will produce their different gametes with the same probability. Each possible gamete will appear in a 1/4 proportion: YR, Yr, yR, yr.
The 9:3:3:1 ratio is a result of analyzing the possible phenotypes that result from the dihybrid cross.

See the attached image for an illustration of the crosses in each generation and the Punnett Square.

4 0

3 years ago

Erythrocytes do not carry out aerobic respiration; thus, they do not consume any of the oxygen they are transporting.

photoshop1234 [79]

False
Erythrocytes also known as Red Blood cells carry oit aerobic respiration; thus, they consume any of the oxygen they are transporting. They transport oxygen and takes away carbon dioxide from the cells. It contains a pigment called haemoglobin that helps in this process......

HOPE IT HELPS YOU '_'

8 0

4 years ago

How are interphase and mitosis different from one another?

seraphim [82]

Answer:

Hi Todoroki here! UwU

Explanation:

The key difference between interphase and mitosis is that interphase is the longest phase of the cell cycle in which cell grows and replicates its DNA while mitosis is a short phase of the cell cycle in which cell nucleus turns into two nuclei that bear identical genome as the original nucleus to produce two new cells.

~Happy to help! ^^

8 0

3 years ago

What process leads to water entering an aquifer? A.Transpiration B.Condensation C.Percolation D.Evaporation

aivan3 [116]

Option C would be correct.

Percolation is the process of liquid slowly going through a filter. For instance, just like grinded coffee beans are poured in a filter to make your hot drink, percolation means the same exact thing.

In fact, the root word in percolation is percolare meaning "to strain/go through".

Hope this helps!

~Autumly

8 0

3 years ago

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Strong acids _____completely, therefore, causing ______change in pH.

ZanzabumX [31]

Answer:

Dissociate, a decrease in pH

Explanation:

Strong acids dissociate 100% in aqueous solution, and lower pH

4 0

2 years ago

Read 2 more answers