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aniked [119]
3 years ago
14

Define nucleus and nucleolus

Biology
2 answers:
zhenek [66]3 years ago
5 0

The nucleolus is a structure found in the nucleus of cells and it forms around specific chromosomal regions in the nucleus of eukaryotic cells, and is made up of proteins and ribonucleic acids. Its main function is to transcribe ribosomal RNA (rRNA) and combine it with proteins to form incomplete ribosomes

RSB [31]3 years ago
3 0

Answer:

Nucleus

the central and most important part of an object, movement, or group, forming the basis for its activity and growth.

Nucleolus

a small dense spherical structure in the nucleus of a cell during interphase.

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1. In pea plants, tall (T) is dominant to dwarf (t). Show the cross
MA_775_DIABLO [31]

Answer:

Tt - 2/4 = 1/2 or 50%            Heterozygous TALL

tt - 2/4 = 1/2 or 50%             Homozygous Dwarf

Explanation:

So let's make a Punnett for this so you can see what the outcome is yourself:

Tall is <u>dominant</u> - T

Dwarf is <u>recessive</u> - t

Heterozygous means that they have one of each allele. The genotype of one parent would be then Tt.

***It is heterozygous tall because Tall is a dominant trait so if it is accompanied by the recessive trait dwarf, then the Tall allele would mask it.

The other parent is a dwarf plant. The genotype would then be tt.

*** Now for a recessive trait to appear, it should not have a dominant trait mixed with it, which could mask it. The result then is homozygous recessive or homozygous Dwarf.

So now that we know the genotypes of the parent plants, we can put it into a Punnet:

    t      t

T  Tt   Tt

t   tt    tt

As you can see, out of the 4 outcomes we have:

Tt - 2/4 = 1/2 or 50%            Heterozygous TALL

tt - 2/4 = 1/2 or 50%             Homozygous Dwarf

5 0
3 years ago
If the weather becomes stormy for a short time and then becomes colder, which type of front has passed
Llana [10]
Hello There!

It would be a Warm Front.

Hope This Helps You!
Good Luck :) 

- Hannah ❤
5 0
3 years ago
Read 2 more answers
Stage of photosynthesis​
borishaifa [10]

Answer:

Photosynthesis takes place in two stages: light-dependent reactions and the Calvin cycle. Light-dependent reactions, which take place in the thylakoid membrane, use light energy to make ATP and NADPH. The Calvin cycle, which takes place in the stroma, uses energy derived from these compounds to make GA3P from CO2.

Explanation:

<h3>I hope this helps!</h3>
8 0
2 years ago
Gene mutations can be passed on to future generations and drive natural selection. Choose the best description of how Gene mutat
prohojiy [21]
Gene mutations can be passed on to future generations and drive natural selection. ... Gene mutations can be helpful, harmful, or neutral for an organism's survival. Only mutations that are helpful in the organism's environment would influence its survival and reproduction
5 0
3 years ago
These the flow of electrons (the current) and where some of the electrons' energy gets converted into heat.
Pavlova-9 [17]

Answer:

Insulators

Explanation:

The purpose of insulators are to convert the energy into thermal or heat energy

3 0
2 years ago
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