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Ivan
3 years ago
15

Directional selection only occurs in response to naturally occurring events.

Biology
2 answers:
Anika [276]3 years ago
8 0

Answer:

False.

Explanation:

Directional selection is a form of natural selection and occurs in response to the existence of extreme phenotypes in a population and not in response to naturally occurring events.

An example of directional selection can be seen when a population of flies has small, large and medium-sized individuals. Larger flies are easily hit by spraying insecticides. Thus, small flies have a great advantage over large and medium flies. In this way, small flies are more likely to survive and reproduce, causing a directional selection.

vaieri [72.5K]3 years ago
6 0

Answer:Answer by JKismyhusbandbae: This is false.

Why: Selection and variation is a process that happens more slowly and happens more gradually. The selection and variation is hard to notice over a short period of time. This change is slow, constant and consistent.

Explanation:

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Suppose we found a solar system with the property described below. In light of what you have learned about the formation of our
adelina 88 [10]

Answer:

Surprising

Explanation:

This is surprising because the total number of planets in our solar system are nine which revolve around a central star i.e sun in different orbital paths.  

Also, out of 9 nearly four planets i.e Mercury, Earth, Venus and Mars are terrestrial i.e having some land forms. Out of remaining 5 non terrestrial planets nearly four planets are gas planets (Jupiter, Uranus, Neptune and Saturn) and these planets are distantly positioned from the central star

Hence, the given discovery is surprising

4 0
2 years ago
A student proposes that left-handedness is a recessive trait and is hidden in much of the human population. a survey of his clas
djverab [1.8K]

The frequency of the recessive allele for the left handle will be in this case equal to q^2 = 0.25 >> q = 0.5.

<h3>What is the Hardy Weinberg principle?</h3>

The Hardy Weinberg principle is a model used in population genetics to estimate genotypic and allele frequencies.

The Hardy Weinberg principle states that the sum of the dominant allele and the recessive allele in a population is equal to 1 (p + q = 1).

This principle also states p2 + q2 + 2pq = 1, where p^2 is the dominant homo-zygous allele, 2pq the heterozygous frequency and  q^2 the recessive homo-zygous frequency.

In this case, 9 individuals represent 25% (q^2 = 0.25), thereby the feecuency of q is equal to √0.25 = 0.5.

Learn more about the HW principle here:

brainly.com/question/1365714

6 0
2 years ago
What happens when muscle cell don't have enough oxygen?
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7 0
3 years ago
Read 2 more answers
State two functions of proteins
Stels [109]

Answer:

Protein has many roles in your body. It helps repair and build your body's tissues, allows metabolic reactions to take place and coordinates bodily functions. In addition to providing your body with a structural framework, proteins also maintain proper pH and fluid balance. Your body needs protein for growth and maintenance of tissues. Some proteins are hormones, which are chemical messengers that aid communication between your cells, tissues and organs.

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What does the term "basic unit of matter" refer to?Select one of the options below as your answer: a. Atoms b. Elements c. Molec
katrin2010 [14]

Answer:

Atoms

Explanation:

Atom is the most basic unit of matter. Atoms are used to describe pieces of matter, but a different kind of atom makes up an element.  A combination of atom of different elements creates a molecule. Let's say you have some water, the chemical formula is "H20." If you wanted to separate H and O, that gives you two atoms. H would be Hydrogen and the other atom is Oxygen. So when we combine these two atom they formed as the chemical formula H20.

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3 years ago
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