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3 years ago

I’m simple dominance, what is the result when a dominant allele pairs up with recessive allele

1 answer:

8 0

If a dominant allele pairs up with a recessive allele, the dominant allele is what is physically shown, it over powers the recessive allele.

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The Mesozoic era was the "Age of Reptiles." At the end of the Mesozoic era, many groups of animals disappeared suddenly. Scienti

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The answer is d. A large asteroid or comet impacted the Eartg

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3 years ago

15 meters is how long in a foot?

malfutka [58]

45 feet

there are 3 feet in a meter

so we can find how many feet are in 15 meters by multiplying

15 x 3 = 45

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3 years ago

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How does conservation help to reduce air pollution?

PtichkaEL [24]

B. Using fewer fossil fuels, such as gasoline for a car, reduces the emission of harmful pollutants into the air

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3 years ago

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Please answer 5&6. Thank you.

erastovalidia [21]

Answer:

5. The correct answer would be an option A. ova

Note: I assume that all the samples are of human origin.

DNA (deoxyribonucleic acid) content of somatic cells of humans consists of 46 chromosomes or 23 pairs of chromosomes. Gametes (sperm or ova) are haploid cells produced by the process of meiosis and contain half the number of chromosomes found in parent cell. Hence, they contain 23 chromosomes.

6. The correct answer would be an option J.

Sperm formation or spermatogenesis is the process by which spermatozoa (haploid gamete) is produced from germ cell with the help of meiotic division.

Meiosis results in the formation of four haploid (n) cells from single diploid (2n) parent cell. Here, 2n is given as 8 so, n would be equal to 4.

Meiosis I results in the formation of two secondary spermatocyte cells (both haploid or 4 chromosomes in this case) from single primary spermatocyte (diploid or 8 chromosome in this case).

Both the secondary spermatocytes undergo meiosis II to produce 4 spermatids (each haploid or 4 chromosome in this case). Spermatids differentiate and mature into spermatozoa.

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3 years ago

Which statements describe planetesimals? Select three options. They are the origins of planets. They formed from gas and dust. T

Anika [276]

A solid minute object that is said to come together for the formation of the planet and are believed to produce cosmic dust are called planetesimal.

The options that best describes the planetesimals are:

Option A. They are the origins of planets.

Option B. They formed from gas and dust.

Option D. They are believed to have developed in debris disks.

The descriptions can be explained as:

It is believed that planets formation occurred through planetesimals. The formation happened from gas, dust particles and debris.

By the process of accretion, the discs coalesced and became bigger and solid over time. This bigger mass started attracting other matters towards each other because of gravitational force.

This pull resulted in either breaking or creation a bigger mass of pieces known as planetesimals. The collision continued to become bigger and solid planets we know today.

Therefore, options A, B and D are correct.

To learn more about planetesimals refer to the link:

brainly.com/question/10337322

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2 years ago

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