Answer:
The options
a. New combinations of genes yielding genotypes of greater fitness
b. Few heterozygotes because of underdominance
c. Frequency-dependent selection, leading to fluctuations in fitness
d. Heterozygotes with greater fitness, owing to overdominance
e. A random assortment of genotypes because of genetic drift
The CORRECT ANSWER IS b.
b. Few heterozygotes because of under dominance
Explanation:
In genetics, underdominance (at times called "negative overdominance") is the opposite of overdominance.
It is the selection against the heterozygote, that leads to disruptive selection and divergent genotypes. It occurs in cases of inferior and reduced fitness (As in our case study, it is the different chromosomal fusions and inversions)
of the heterozygotic genotype to the dominant or recessive homozygotic genotype. It is unstable as it causes fixation of either allele.
Another example is the African butterfly species Pseudacraea eurytus, which makes use of Batesian mimicry to avoid predation. This species carries two alleles that gives a coloration that is alike to a different local butterfly species that is harmful to its predator. The butterflies who are heterozygous for this trait are observed to be intermediate in coloration and thus encounter an higher risk of predation and a decrease in the total fitness.
<h3>Meat consumption and environment</h3>
Explanation:
Increase in population rises protein demand. Many people meet their dietary protein requirements mainly from animal sources by consumption of meat and meat products like meat, eggs, and processed meat products.
Increased meat consumption leads to increase in global warming. Increased meat consumption raises the demand for meat and animal farming like cattle, poultry and fish farming.
Farm animals release methane through their waste into the environment. Methane is one of the most potential greenhouse gases that cause global warming.
Animal farming practices requires a lot of water and hence depletes natural water sources. Moreover, the effluent drainage from farmlands pollutes the land as well as natural ground water sources with methane and other pollutants including pathogens and renders the natural sources unusable.
Further, farm animals like cows and goats grazes farmlands and destroys the green cover which helps in carbon sequestration.
The functions of proteins include:
- They transport oxygen in the blood of vertebrates.
- They play a key role in moving materials within cells.
- They help the body recognize and destroy foreign microbes and cancer cells.
- They catalyze chemical reactions.
<h3>Functions of proteins</h3>
Proteins are macromolecules that helps in the maintenance of metabolic activities and repair of worn out tissues of the body.
There are several functions of proteins which has helped in it's classification. The different types of Protein found in the body are:
- Antibodies: These are proteins that function to recognize and destroy foreign microbes and cancer cells.
- Enzymes: These are proteins that catalyze chemical reactions in the body.
- Transport proteins: They play a key role in moving materials within cells.
- Haemoglobin: These are blood proteins that transport oxygen in the blood of vertebrates.
Learn more about proteins here:
brainly.com/question/10058019
A, Cold/dry air sinks below the warm/ wet are it is pushed upwards
