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Iteru [2.4K]
2 years ago
13

Which of the following observations contributed to the cell theory?

Biology
2 answers:
saveliy_v [14]2 years ago
3 0
I'm sorry but can you be a bit more specific on these following observations?
geniusboy [140]2 years ago
3 0
1. The cell was the smallest unit in a living thing 2. Cells are made by pre existing cells 3. Every living thing has at least 1 or more cells.
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In 2016 the population of Shih-Tzus was 24,500 in the US at a growth rate of 3.2%. How many years will it take for the Shih-Tzu
Naddik [55]

Answer:

31,000 i just subtracted

Explanation:

7 0
1 year ago
Match each definition to the appropriate term. locus
liraira [26]
I) Locus- the chromosomal site where a specific gene is located. A locus is a fixed position on a chromosome, like the position of a gene or a marker. Each chromosome carries ,many genes; human's estimated haploid (n) protein coding genes are about 20,000, on the 23 different chromosomes.


ii) Interference; the observed double crossover frequency differs from the expected double crossover frequency. Cross over interference is used to refer to the non-random placement of crossovers with respect to each other during meiosis. It results in widely spaced crossovers along chromosomes. Interference may exert its effect across whole chromosomes. As chromosomes in many eukaryotes are large, interference must be able to act over megabase lengths of DNA. 

iii) Linkage- the tendency for genes located in close proximity on the same chromosome to be inherited together. Normally when two genes are close together on the same chromosome, they do not assort independently and are said to be linked. Whereas genes located on different chromosomes assort independently and have a recombination frequency of 50%, linked genes have a recombination frequency that is less than 50%.

iv) Recombination- the process by which a new pattern of alleles on a chromosome is generated. Genetic recombination is the production of offspring with combinations f traits that differ from those found in either parent. During meiosis in eukaryotes, genetic recombination involves the pairing of homologous chromosomes. This may be followed by information transfer between the chromosomes. 
4 0
2 years ago
Can you please help me
Sonja [21]
The answer is option 1, 3, 5,7, and 10
8 0
2 years ago
Suppose the following amino acid chain was created based on a student's transcription and translation: Tyr-Leu-Pro-Met In the ch
Nataliya [291]

Answer:

Error: The Methionine at the end of the chain

Explanation:

Hello! Let's solve this!

The start codon is AUG, this codon encodes Methionine. Therefore all proteins will start the amino acid sequence with Methionine.

In this case, the student placed the Methionine at the end of the chain, so that is the mistake. Methionine goes to the beginning of the chain.

7 0
2 years ago
Read 2 more answers
Cells are categorized as either prokaryotic or eukaryotic. classify the characteristics below as being unique to prokaryotic cel
dezoksy [38]
Prokaryotic cells: lack membrane-bound organelles, relatively small - typically less than 10 μm in size. 

Both cell types: use ribosomes to synthesize proteins, contain DNA. 

Eukaryotic cells: complete copy of DNA stored in multiple chromosomes.

In particular, prokaryotic cells have no nucleus and no membrane-bound organelles, therefore their ribosomes float freely intracellularly. On the other hand, eukaryotic cells have nucleus and membrane-bound organelles. Also, their DNA is bound to proteins and stored in the form of chromosomes in the nucleus.

4 0
2 years ago
Read 2 more answers
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