Question

Always make sure allele and genotype frequencies add up to:

A) 1.
B) 0.5.
C) 2.
D) 100.

Answer 1

A) 1. H20

Explanation:

Allele and genotype frequencies are essential concepts in population genetics. The correct sum for both allele and genotype frequencies is 1, making option A) the accurate choice. This ensures that the total probability of all possible outcomes equals 100%.

In population genetics, the Hardy-Weinberg equilibrium provides a framework to understand how genetic variation is maintained in a population. According to this equilibrium, the sum of the frequencies of all alleles at a particular locus equals 1. For a biallelic locus with alleles A and a, the frequency of A (p) and the frequency of a (q) satisfy the equation p + q = 1.

Similarly, when considering genotypes (such as AA, Aa, and aa), the sum of their frequencies must also equal 1. If p is the frequency of allele A and q is the frequency of allele a, the frequency of the homozygous genotype AA is p^2, the frequency of the heterozygous genotype Aa is 2pq, and the frequency of the homozygous genotype aa is q^2. Adding these frequencies together, we get p^2 + 2pq + q^2 = 1.

Therefore, the sum of allele frequencies and genotype frequencies must always be 1, ensuring that all possible genetic outcomes are accounted for in a population. This fundamental principle is crucial in understanding and analyzing genetic data in various fields, including evolutionary biology and medical genetics.

Answer 2

Always make sure allele and genotype frequencies add up to: A) 1.

Step-by-step explanation:

The sum of allele and genotype frequencies in a population should always add up to 1. This concept is based on the principle of probability, where all possible outcomes must account for the entire probability space. Therefore, the correct answer is A) 1, indicating that the total probability of all possible alleles and genotypes in a population equalsA)1.

In population genetics, allele frequencies represent the proportion of a particular allele in a population, and genotype frequencies represent the proportion of individuals with a specific genotype. The sum of all allele frequencies and genotype frequencies encompasses all possible genetic variations within the population.

The mathematical representation of this principle is ∑p = 1, where p represents allele frequencies. Similarly, the sum of all genotype frequencies (∑P) also equals 1, ensuring that the entirety of genetic variability is considered.

Maintaining the principle that the sum of probabilities equals 1 is fundamental to the field of population genetics and the study of genetic variation within populations. This principle provides a mathematical foundation for understanding the distribution of alleles and genotypes, helping researchers analyze and interpret genetic data accurately.