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Inga [223]
3 years ago
13

Explain how cells were discovered.

Biology
2 answers:
Gwar [14]3 years ago
4 0

Answer:

Interested in learning more about the microscopic world, scientist Robert Hooke improved the design of the existing compound microscope in 1665. And when he observed a cork of the tree with the modified microscope he saw that it looked like little rooms and named cell the latin word for little room.

This is how it began.

sweet [91]3 years ago
3 0

Answer:

they were discovered by Robert Hooked in 1665. It looked like similar to cellua.

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4. What genotypes of parents will have only white-fur offspring? Parent 1 genotype = Parent 2 genotype = What genotypes of paren
AnnZ [28]

Answer:

All white offspring: Parent 1 genotype = homozygous dominant

                            Parent 2 genotype = homozygous/heterozygous dominant

For all black offspring: Parent 1 genotype = homozygous recessive

                                     Parent 2 genotype = homozygous recessive

Explanation:

The cross was between a white mouse and a black mouse and the phenotypic ratio of the resulting offspring is 50% white and 50% black.

Assuming that fur color in the mouse is represented by the allele A (a), In order to give 1:1 phenotypic ratio of the offspring, it means the white mouse is heterozygous with Aa genotype and the black mouse is homozygous with aa genotype. Also, it means that the allele A is dominant over the allele a.

                       Aa    x    aa

                 Aa    Aa    aa    aa

Aa = white

aa = black

Ratio of white to black = 50/50 or 1:1

Hence, in order for a cross to yield only white offspring, the parents can either be homozygous AA and AA or one will be homozygous AA and the other will be heterozygous Aa.

1.              AA    x    AA

       AA    AA    AA    AA (all white offspring)

2.            AA    x    Aa

        AA    Aa    AA    Aa (all white offspring).

In order to produce only black offspring, both parents must be homozygous aa.

             aa    x    aa

         aa    aa    aa    aa    (all black offspring)

4 0
3 years ago
HUUUUURRRRRYYYYY PPPPLLEEEEEAAASSSEEEE
Liula [17]
A....................
6 0
3 years ago
When an animal runs along the ground by flexing some of its muscles, what causes its muscles to contract?
ira [324]
Letter A for sure! Hope I helped.
8 0
3 years ago
Read 2 more answers
Is most of South America's trees tropical trees?
Oliga [24]
The most common tree in that continent is one that's named "floss silk". It's classified as a tropical tree so we could say that most of South America is covered in tropical trees.

Have a nice day! :)
8 0
3 years ago
Bro you’re literally a furry
pishuonlain [190]

Answer:

Yes.

Explanation: He is a fox :>

4 0
2 years ago
Read 2 more answers
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