Of the following groups, which would collectively share the most alleles? one niece, two first cousins, and a brother one son, one niece, and one first cousin four nieces and one first cousin two sisters and two nieces
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Genetic Variation
Genetic variation refers to the variation in the genome sequences between individual organisms of a species. Individual differences or population differences can both be referred to as genetic variations. It is primarily caused by mutation, but other factors such as genetic drift and sexual reproduction also play a major role.
Quantitative Genetics
Quantitative genetics is the part of genetics that deals with the continuous trait, where the expression of various genes influences the phenotypes. Thus genes are expressed together to produce a trait with continuous variability. This is unlike the classical traits or qualitative traits, where each trait is controlled by the expression of a single or very few genes to produce a discontinuous variation.
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- QUESTION 2 A male hare with the genotype AaBb is crossed with a female hare with the genotype AABb. Use a Punnet square to determine the genotypes, phenotypes and proportions in the offspring. Show all your working. [17] A = black hair a = yellow hair B = brown eyes b = blue eyesQUESTION 5. The pedigree below follows the appearance of a rare autosomal dominant condition resulting in malformation of limbs through a family. What is the penetrance of this trait? i.e., What is the ratio between the number of individuals in the pedigree who display the trait (numerator) and the number of individuals you know from the pedigree must have the trait-determining genotype (denominator)? Enter your answer in the form of a fraction without any spaces. e.g., If your answer is “one-fourth”, enter: 1/4QUESTION 46 Consider selection acting against dominant alleles compared to selection acting against recessive alleles. Which will lead to faster allele fixation and why?
- Question 3. There are 100 students in a class. Ninety-six did well in the course whereas four blew it totally and received a grade of F. Sorry. In the highly unlikely event that these traits are genetic rather than environmental, if these traits involve dominant and recessive alleles, and if the four (4%) represent the frequency of the homozygous recessive condition, please calculate the following: A) The frequency of the recessive allele. B) The frequency of the dominant allele. C) The frequency of heterozygous individuals. Question 4 Within a population of butterflies, the colour brown (B) is dominant over the colour white (b). And, 40% of all butterflies are white. Given this simple information, which is something that is very likely to be on an exam, calculate the following: A) The percentage of butterflies in the population that are heterozygous. B) The frequency of homozygous dominant individuals. Question 5 A rather large population of organisms have 396 red-sided individuals…QUESTION 1 The figure shown below indicates two Labrador retrievers that are both homozygous recessive for fur color. One dog is brown and the other is yellow due to a. pleiotropy. c incomplete dominance. d. epistasis. QUESTION 3 Which of the following did Gregor Mendel notice in garden peas? a. Some plants always produced offspring with flowers that were the same color as the parent plants’ flowers. b. Garden peas always produce a variety of phenotypes in their offspring, which result from frequent mutations. c. Any individual pea plant carries at least three different alleles for flower color. QUESTION 4 A chestnut-colored (red-colored) horse is mated with a cremello (cream-colored) horse. Over a 10-year period, all of their offspring are palominos (gold-colored). This pattern of inheritance is best explained by a. environmental effects on genes. c. multiple gene effects. d. incomplete…Question 1 refers to the pedigree chart in Figure 11.2 for a family, some of whose members exhibit the dominant trait, W. Affected individuals are indicated by a dark square or circle. 1) What is the genotype of individual II-5? What are the genotypes of individuals II-2, 3, and 4 and II-6, 7, and 8?
- QUESTION 43 Which of the following statements is true about linkage disequilibrium? a. D= -0.21 indicates that two loci are in greater LD than D= 0.15 b. New alleles are born into a population in LE with the surrounding loci c. Divergent populations that experience a sudden large migratory event will be immediately in LE after mixing. d. Selective sweeps occur randomly along chromosomes as a result of LE and LD alternating at regular intervals.Question 1.You have sampled a population in which you know that the percentage of the homozygous recessive genotype (aa) is 36%. Using that 36%, calculate the following: A) The frequency of the "aa" genotype. B) The frequency of the "a" allele. C) frequency of the a allele, then the frequency is 60%. D) The frequency of the "A" allele. E) frequency of A is by definition equal to p, so the answer is 40%. F) The frequencies of the genotypes "AA" and "Aa." G)The frequencies of the two possible phenotypes if "A" is completely dominant over "a."No, what I mean is still on no. 3. Which is the real answer. The step 1 or step 2 that you gave? And why it has a step?
- Question 10. Identify the three ways that a karyotype can be organized.QUESTION 3 If parents differ in only a single characteristic during a test cross, it is a ________ cross. a. dihybrid b. monohybrid c. trihybridGENETICS Question; 1. Give the genotypes and its ratio of the dihybrid cross of FIGURE 7. Regarding this problem, you may refer the genotype of the monohybrid cross of pea flower color in Figure 6.