BIOLOGY COLLEGE

In a large population, the allele frequency of A was .5 and changed to .7 over just a few generations. Which of the following statements about this example is FALSE?1. Evolution is occurring in the population.
2. The A allele is undergoing positive selection and istherefore adaptive.
3. The a allele is undergoing negative selection anddecreases fitness.
4. The population is undergoing genetic drift.
5. None of the above is false

Answers

Answer 1

Answer:

Answer:

Option:(5)- All of them are correct.

As the change in allele frequency causes the change in genome of the living organism inside few generations.

Explanation:

The effects of change in allele frequency:

The effect may leave the organism with the loss of some genes, while it can effect cause the loss of some of the beneficial genes inside the genome of the organism. Along with that the process can also improve the sequence of genes which are abnormal in nature.

Genetic Drift:

"The change or the evolution inside the alleles frequency of the organisms genome, which may occur due to the chance events."

As the process of genetic drift occurs inside generations, which leaves the random organisms to live.

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A 0.2 M solution of NaCl contains ________ g of NaCl in 1 l of ________.Please Fill in the Blanks.

Answers

Answer:

11.7 g in 1 L of water.

Explanation:

Molarity (M) or Molar concentration is a measure used in chemistry for solutes in a solution.

It is defined as mol/ L (number of moles per litre).

0,2 M means we have 0,2 mol/ L

In order to know how many grams this means we need to look up the molecular weight of the solute. In this case NaCl: 58.443 g/mol

$(1 mol NaCl)/(58.443 g)$ = $(0.2 mol)/(X g)$

X= $((0.2 mol x 58.433 g)/(1 mol)$

X= 11.69 g

The solution has 11.69 g of NaCl in 1 L of water since its an adequate polar solvent for NaCl dissolution.

Drag the tiles to the correct boxes to complete the pairs. Match the organisms to the descriptions.

Answers

Answer:

If this was edmentum. this was my question and answer

Explanation:

see pic below

Answer:

Ok, no boxes but whatever

Mammals - Endothermic Homeostasis (Warm Blooded), Hairy Body, Have babies live

Birds - Endothermic Homeostasis(Warm Blooded), Have eggs, feathers, claws

Bacteria - Single celled, use binary fission to divide

Fungi - Multi or single celled, have chitin cellular walls

Plants - Have cellulose plant walls, multicellular organism

Archae Bacteria - Same as normal, except they live in crazy enviorments, like at the bottom of the ocean or in a volcano or radiation pool

Protozoa - Single celled organism class, like ameoba

Fossil fuels are formed naturally beneath the surface of the earth. humans use fossil fuels as energy sources. which choice is NOT a fossil fuel?A) oil
B) coal
C) natural gas
D) uranium ore

Answers

The correct answer is D) uranium ore

Which of the following are depressions or opening that allows for the passage blood vessels and nerves.A. Forman
B.fossa

Answers

Answer:

Foramen - A hole through which nerves and blood vessels pass

I believe this is the answer not a hundred percent though.

Why does an insertion mutation usually cause more defects during protein synthesis than a point mutation?a. insertion mutations only occur during transcription.
b. insertion mutations can only be silent mutations.
c. insertion mutations can affect many amino acids in the protein.
d. insertion mutations are chromosomal mutations?

Answers

The study of cells is called cell biology. There are two types of a cell on the basis of their number and these are unicellular and multicellular.

The correct answer to the question is option C that is insertion mutations can affect many amino acids in the protein.

What is transcription?

The conversation or transferring of the gene from DNA to RNA is called transcription.

What is mutation?

The abnormality in the gene in the DNA sequence which forms a mutated protein is called a mutation.

The formation of protein is called translation. This addition of genes changes the sequence of RNA which alters the protein formation while in point mutation it changes only one amino acid.

Hence, the correct answer is option C.

For more information about the transcription, refer to the link:-

brainly.com/question/15209553

Keeping in mind the life cycle of bacteriophages, consider the following problem: During the reproductive cycle of a temperate bacteriophage, the viral DNA inserts into the bacterial chromosome where the resultant prophage behaves much like a Trojan horse. It can remain quiescent, or it can become lytic and initiate a burst of progeny viruses. Several operons maintain the prophage state by interacting with a repressor that keeps the lytic cycle in check. Insults (ultraviolet light, for example) to the bacterial cell lead to a partial breakdown of the repressor, which in turn causes the production of enzymes involved in the lytic cycle. As stated in this simple form, would you consider this system of regulation to be operating under positive or negative control?

Answers

Romans and the Trojan war

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Galactosemia is a recessive human disease that is treatable by restricting lactose and glucose in the diet. Susan Smithers and her husband are both heterozygous for the galactosemia gene. If Susan and her husband have four children, what is the probability that: a. none of the four will have galactosemia?b. at least one child will have galactosemia?c. only one child will have galactosemia?d. the first two will have galactosemia and the second two will not?e. two will have galactosemia and two will not, regardless of order?

During the period of time labeled Z in the graph, there is a drastic change in biodiversity. Which of following best describes the ecosystem at the rnd of time period Z?