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Tanya [424]
3 years ago
7

1)Which of the following is a source of genetic variation

Biology
1 answer:
Svetllana [295]3 years ago
6 0

The answer is; B

Mutations change the order of nucleotide and therefore affects codons that code for proteins. A different protein is thus produced from the wild type hence creating variations.  Genetic shuffling in sexual reproduction, also called gene recombination occurs during meiosis and also when different organisms exchange genetic material such as in bacteria.  

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mezya [45]
This is False there are many types of bacteria that can move without a flagella
5 0
3 years ago
How does temperature affect the amount of carbon dioxide that yeast cells produce
raketka [301]

Yeasts will grow over a temperature range of 10°-37°C (50°-98.6°F), with an optimal temperature range of 30°-37°C (86°-98.6°F), depending on the type of species. There is little activity in the range of 0°-10°C. Above 37°C yeast cells become stressed and will not divide properly. Most yeast cells die above 50°C (122°F).


7 0
3 years ago
Non-photosynthetic species of Euglena are sometimes classified as which of the following?
IRISSAK [1]

Options are not provided in the question. The complete question is as following:

Non-photosynthetic species of Euglena are sometimes classified as which of the following?

a. zooflagellates

b. sarcodines

c. water molds

d. pyrrophytes

Answer:

a. zooflagellates

Explanation:

Zooflagellates are non-photosynthetic flagellates which lack cell walls or plastids. The mode of their feeding is by phagocytosis or endocytosis.

Non-photosynthetic species of Euglena are consider as Zooflagellates. Zoomastigophora is a phylum within the kingdom Protista. some of the diseases caused by zooflagellates  includes African Sleeping Sickness. they have a spherical, elongated body with a single central nucleus and form a symbiotic relationship with other organisms.

Hence, the correct option is a.

5 0
2 years ago
Activation of the parasympathetic nervous system _____ salivation and decreases blood pressure.
viktelen [127]
It increases salivation and decreases blood pressure
5 0
3 years ago
If a decision was made to convert forest to agriculture, which would be an
kifflom [539]

Answer:

B

Explanation:

Because the roots of the tree were what where controling the erosion

Hope this helps :))

6 0
3 years ago
Read 2 more answers
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