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nadezda [96]
3 years ago
7

4. Does a prokaryotic cell have a cell wall?

Biology
1 answer:
vladimir2022 [97]3 years ago
6 0
They have a cell wall and nucleus but they have no membrane-bound organelles like eukaryotic cells
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In a hypothetical population of plants, flower color is determined by a single gene with two alleles. In a population of 500 pla
blondinia [14]

Answer:

In the F1 generation

RR = 0%

Rr = 50% (or 0.5)

rr = 50% (or 0.5)

Explanation:

A pink flowering plant has the genotype Rr. It is heterozygous for the allele. The alleles for this gene appears to show incomplete dominance, as the heterozygous phenotype is a blend of the two homozygous genotypes.

A white flowering plant has the genotype rr. It is homozyogous for the white allele

A punnet square of the cross is shown.

The resulting punnet square shows that only Rr and rr genotypes are possible, at a ratio of 50:50 (or 1:1). Therefore, the genotype frequency of Rr is 50%, and rr is 50% in the F1 generation. This can also be written as 0.5. It is not possible to get a red plant, as the genotype RR can not come from this cross

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8 0
3 years ago
What facts can you compile that would support a theory that multicellular eukaryotes developed from unicellular prokaryotes?
Delicious77 [7]

Answer:

Multicellular eukaryotes evolved from unicellular prokaryotes by the process of endosymbiosis

Explanation:

All living beings have evolved from three groups of animals closely related with each other.Domains: Archaea,bacteria and eukarya.the archaea and bacteria are unicellular organism surrounded by single cell water and  and coiled stand of DNA. Eukaryotic cells are more complex and with a linear  strand of DNA which is in the nucleus. Actually mitochondria which had evolved from a free living bacterium which was swallowed by another cell. The host cell benefited from the chemical energy that mitochondria produced and mitochondria in turn is benefited to be inside the protected environment. Mitochondria is the main organelle which the multicellular eukaryotes with unicellular prokaryotes.

3 0
3 years ago
Helpppp , I’ll give you 25 points and a brainy .
neonofarm [45]
A Respiration by animals CO2 is being added.
B trees burning same
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D oil added
8 0
3 years ago
Need help with biology​
Luba_88 [7]

Answer:

Biology is the study of living organisms, divided into many specialized fields that cover their morphology, physiology, anatomy, behavior, origin, and distribution. It can also be described as

Explanation: the physiology, behavior, and other qualities of a particular organism or class of organisms.

<u>What else do you need to know? You weren't very specific...</u>

6 0
3 years ago
Please help! will give brainlist!
harina [27]

Answer:

All living organisms share several key characteristics or functions: order, sensitivity or response to the environment, reproduction, growth and development, regulation, homeostasis, and energy processing. When viewed together, these characteristics serve to define life

Explanation:

6 0
3 years ago
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