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kow [346]
3 years ago
11

How can a pure white mouse help determine the genotype of a black mouse? (Hint: We cannot see genotype but we can see difference

s in the phenotype of their offspring).
Biology
1 answer:
sattari [20]3 years ago
8 0

Answer:

A white mouse is purely recessive, and will produce black offspring if the other mouse contributes a black gene.

Explanation:

If Bb then the offspring will be 50% Bb and 50% bb. This is called a test cross, where we use a recessive to determine the genotype of a dominant phenotype.

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How do the functions of DNA and RNA differ?
SpyIntel [72]

Answer:

DNA is functional is the transmission of genetic information. It forms as a media for long-term storage. RNA is functional is the transmission of the genetic code that is necessary for the protein creation from the nucleus to the ribosome. The DNA is a double-stranded molecule that has a long chain of nucleotides.

3 0
2 years ago
What is still lacking in the hypothesis of an asteroid impact as the cause of the end-cretaceous mass extinction?
Doss [256]

A convincing explanation of why some lineages survived while others vanished is still lacking in the hypothesis of an asteroid impact as the cause of the end-cretaceous mass extinction.

<h3>What is an asteroid?</h3>

One of the smaller planets in the inner Solar System is an asteroid. Asteroids are metallic or rocky bodies without an atmosphere, ranging in size from 1-meter pebbles to a dwarf planet with a diameter of over 1000 km.

The majority of the one million or more known asteroids are concentrated in the main asteroid belt, which is 2 to 4 AU from the Sun and between the orbits of Mars and Jupiter. The three categories of asteroids that are typically recognized are C-type, M-type, and S-type.

These were given their names and are frequently associated with, respectively, carbonaceous, metallic, and silicaceous compositions. The largest asteroid, Ceres, has a diameter of over 1,000 km (600 mi), making it a dwarf planet.

To learn more about an asteroid with the help of given link:

brainly.com/question/11996385

#SPJ4

8 0
1 year ago
Can molecules made from the same atom form ionic bonds. Why?
Digiron [165]
No. Ionic bonds form when atoms with opposite charges bond with one another. Atoms develop charges by gaining or losing electrons. For a given element, the atoms will (usually) have a tendency to gain OR lose a particular number of electrons, so they can only form ions of a particular charge that is either positive or negative.
4 0
3 years ago
Use the Punnett square to predict the genotype for the parent organism whose genotype is unknown and
Katyanochek1 [597]

Answer: The genotype for the parent organism whose genotype is unknown is Ff.

Explanation: Let (F) represent the allele for purple which is dominant over (f) and (f) represent the allele for white.

The parent organism whose genotype is unknown is heterozygous for purple colour (Ff).

A cross between Ff and ff will produce four offsprings: two of which are Ff (heterozygous for purple colour) and two are ff (white).

Ff x ff = Ff, Ff, ff and ff.

Since (F) is dominant over (f), (Ff) will manifest as purple while (ff) will manifest as white. Therefore, half of the offsprings are purple while the other half are white.

See the attached punnet square for more information

3 0
3 years ago
Why is the "movie" becoming more and more important to Steve​
Rainbow [258]

Answer:

The movie becomes more important to Steve because it represents its fears and the rationalization of it being a fantasy allows him to overcome them.

Explanation:

The reason behind this answer is that in the ned, Steve is very scared and wants to overcome his fears. However, he can face them because they are not real. Thus, he needs the movie because he can fight them and don't fail against them. He wants to grow, to overcome them and that is why he needs it. It is a mechanism for him to grow, he knows it and he pushes himself to do it.

7 0
2 years ago
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