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Soloha48 [4]
3 years ago
8

What situation might develop in a population having some plants whose flowers open at midday and other plants whose flowers open

late in the day?
Biology
1 answer:
Kay [80]3 years ago
8 0

Complete question: What situation might develop in a population having some plants whose flowers open at midday and other plants whose flowers open late in the day?

a. Temporal isolation

b. Geographic isolation

c. Behavioral isolation

d. Genetic drift

Answer:

a. Temporal isolation

Explanation:

Temporal isolation is one of several mechanisms of reproductive isolation. Temporal isolation occurs when some organisms of a population exhibit different timing of reproductive maturity. It also occurs when some members of a population reproduce at a different time from the others. This does not allow interbreeding between them.

When plants of a population open flower at a different time of day, cross-pollination would not occur between these plants. This represents temporal isolation.

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Describe how and where viruses reproduce and the function of RNA and DNA in this process.
topjm [15]

Answer:

Using the host's cellular metabolism, the viral DNA begins to replicate and form proteins. Then fully formed viruses assemble. These viruses break, or lyse, the cell and spread to other cells to continue the cycle. Like the lytic cycle, in the lysogenic cycle the virus attaches to the host cell and injects its DNA.

7 0
3 years ago
What are the causes of muscle fatigue? check all that apply.
Pie

Answer:

While exercise is a common cause of muscle fatigue, this symptom can be the result of other health conditions, too.

Causes of muscle fatigue

Addison's disease.

age.

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anemia.

anxiety.

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8 0
3 years ago
When plants make flowers, gene A is expressedin whorls 1 and 2, gene B is expressed in whorls 2 and 3 and gene C in whorls 3 and
Sati [7]

Answer:

The correct answer would be option D) no gametes.

Explanation:

The ABC model of the flower was formulated to describe the collection of genetic procedures that determines floral organs in several plants. These species consist of four whorls which are sepals, petals, stamens, and carpels. These whorls are expressed by the expression of a number of genes present in each whorl or verticli.

Gene A is solely responsible for the sepals while the co-expression of A and B genes are responsible for the petals. The identity of the stamens is expressed by B and C and the carpels require C and D genes to be active.

The homozygousity for a normal mutation in gene C will lead to inactive or lack stamens and carpels, which are male and female reproductive organs. These are an important structure for forming gametes.

Thus, the correct answer would be option D) no gametes.

3 0
3 years ago
During a drought on the galapagos islands, finches with larger beaks were able to crack the large tough seeds produced by plants
TEA [102]

It is an example of directional selection.

The different kinds of natural selection can influence the distribution of phenotypes within a population. In stabilizing selection, an average phenotype is preferred.

In directional selection, a modification in the surrounding changes the spectrum of the observed phenotypes, and in diversifying selection the extreme values for a trait are preferred over the transitional values. This kind of selection usually pushes speciation.

The directional selection, in the field of population genetics, refers to a mode of natural selection in which an extreme phenotype is preferred over other phenotypes, making the allele frequency to change with time in the orientation of that phenotype.

3 0
3 years ago
Pollen is produced by the process of
IRISSAK [1]

The process of microsporogenesis

4 0
3 years ago
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