Homework Answers
Assuming that the genes A, B, D and E are completely dominant over a, b, d and e respectively. Cross between these parents will have the progeny with the following genotypes:
Aa*Aa -à A_ (3/4), aa (1/4)
Bb*bb -à Bb (1/2), bb (1/2)
Dd*Dd à D_ (3/4), dd (1/4)
ee*Ee -à Ee (1/2), ee (1/2)
Thus, the proportion of progeny with the phenotype similar to Parent 2 are, ¾*1/2*3/4*1/2 = 9/64
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Consider the following cross examining four unlinked genes. Identify what proportion of progeny will be phenotypically...
4. The principles that govern the inheritance of two independently assorting genes hold for more than...
4. The principles that govern the inheritance of two independently assorting genes hold for more than two independently assorting genes. Consider the following cross: TIGgSsDDEE * TTGgSsDdEe → a. What proportion of the progeny will phenotypically resemble (1) the first parent, (2) the second parent, (3) either parent, and (4) neither parent? (4 pts.) b. What proportion of the progeny will genotypically resemble (1) the first parent, (2) the second parent, (3) either parent, and (4) neither parent? (4 pts.)
Consider the following cross: Aa Bb × aa bb. If these genes assort independently, what proportion...
Consider the following cross: Aa Bb × aa bb. If these genes assort independently, what proportion of the progeny will have genotype Aa Bb?
Consider the cross (assume a capital allele is dominant to a small case allele): Aa Bb...
Consider the cross (assume a capital allele is dominant to a small case allele): Aa Bb Cc Dd Ee X aa Bb cc Dd ee a) What proportion of the progeny will resemble phenotypically: (1) the female parent? (2) the male parent? (3) either parent? (4) neither parent? b) What proportion of the progeny will resemble genotypically: (1) the female parent? (2) the male parent? (3) either parent? (4) neither parent?
2. Consider the cross Aa Bb Cc Dd X aa Bb cc dd. All of the...
2. Consider the cross Aa Bb Cc Dd X aa Bb cc dd. All of the genes are on mes. What proportion of progeny will phenotypically resemble the second parent (i.e. the parent listed second in the cross)? Show each individual cross AS OUTLINED IN CLASS. Punnett squares are NOT allowed. Also, show the final calculation to get your answer. In other words, show all of your work. (5 marks) SEDOT a slobo Question 10 (1 point) For the peptide:...
please show your work, thank you in advance!! 12 - 14: Consider three unlinked genes: a,...
please show your work, thank you in advance!!
12 - 14: Consider three unlinked genes: a, b, c are the recessive alleles, and A, B, C are the dominant alleles. Now if two triple heterozygote individuals (i.e. Aa/Bb/Cc) are crossed; *12. What is the probability of getting an offspring that was recessive for all three genes? a) 3/4 = 0.75 b) 1/64 = 0.0156 c) 1/8 = 0.125 d) 1/4 = 0.25 e) 27/64 = 0.422 *13. What is the...
Question 1a) In a male mouse, we are following 10 genes using a new molecular method...
Question 1a) In a male mouse, we are following 10 genes using a new molecular method to determine if gene pairs are homozygous or heterozygous in sperm cells. How many different sperm cells may be formed if six of the ten gene pairs are homozygous and the remaining four gene pairs are heterozygous in the male parent? a. 20 b. 32 c. 60 d. 64 e. 1024 Question 1b) You set up a cross of a pure line of gerbils...
1. You carry out a dihybrid cross in petunias. You are unaware of the linkage relationship...
1. You carry out a dihybrid cross in petunias. You are unaware of the linkage relationship between the genes DBL and CAS. One parent has single flowers (dbl) and has and upright growth habit (cas) while the other parent is wildtype, having double flowers (DBL) and a cascading growth habit (CAS). You cross the two parents to produce a wild-type F1 and then carry out a testcross. (a) Write the genotypes, using the correct notation, of the two individuals used...
4. You cross individuals with the following Genotypes, AaBbDdEeFFGg & AaBbDDEeFfGg. Predict the proportion of offspring...
4. You cross individuals with the following Genotypes, AaBbDdEeFFGg & AaBbDDEeFfGg. Predict the proportion of offspring that would show the following Phenotype or Genotype? A) all Dominant Phenotypes, B) the Genotype: AabbDdEeFfgg, C) the Genotype: AABbDdEeFfgg, D) the Genotype: aaBbddEeffGg, & E) all Recessive Phenotypes. 5. You cross individuals with the following Genotypes, AaBbDdEeFFgg x AabbDDEeFfGg. If you produce 1000 offspring in this cross, predict the number of offspring that would have the following Phenotype or Genotype? A) all Dominant...
12. Imagine a cross between AaBb x aabb produces progeny in the following proportions: | AaBb...
12. Imagine a cross between AaBb x aabb produces progeny in the following proportions: | AaBb 31 aabb | 33. Aabb | 12 aaBb] 13 Based on this information, are genes A and B linked, or do they assort independently (Chi-square test)? IF linked, what is the genetic distance between A and B? Are gene A and B in coupling (cis) or repulsion (trans) conformation in the AaBb parent? How can you tell?
A cross between individuals with genotypes a+a b+b x aa bb produces the following progeny (this...
A cross between individuals with genotypes a+a b+b x aa bb produces the following progeny (this is a symbolization system that is often used in microorganisms and Drosophila: where instead of Aand athey use a+and a): a+a b+b 83 a+a bb 21 aa b+b 19 aa bb 77 Does the evidence indicate that these two genes are linked? Explain (what do you expect if they are not linked?). If so what is the map distance between aand b? (show your wok) Are the alleles...
4. The principles that govern the inheritance of two independently assorting genes hold for more than two independently assorting genes. Consider the following cross: TIGgSsDDEE * TTGgSsDdEe → a. What proportion of the progeny will phenotypically resemble (1) the first parent, (2) the second parent, (3) either parent, and (4) neither parent? (4 pts.) b. What proportion of the progeny will genotypically resemble (1) the first parent, (2) the second parent, (3) either parent, and (4) neither parent? (4 pts.)
2. Consider the cross Aa Bb Cc Dd X aa Bb cc dd. All of the genes are on mes. What proportion of progeny will phenotypically resemble the second parent (i.e. the parent listed second in the cross)? Show each individual cross AS OUTLINED IN CLASS. Punnett squares are NOT allowed. Also, show the final calculation to get your answer. In other words, show all of your work. (5 marks) SEDOT a slobo Question 10 (1 point) For the peptide:...
please show your work, thank you in advance!!
12 - 14: Consider three unlinked genes: a, b, c are the recessive alleles, and A, B, C are the dominant alleles. Now if two triple heterozygote individuals (i.e. Aa/Bb/Cc) are crossed; *12. What is the probability of getting an offspring that was recessive for all three genes? a) 3/4 = 0.75 b) 1/64 = 0.0156 c) 1/8 = 0.125 d) 1/4 = 0.25 e) 27/64 = 0.422 *13. What is the...
1. You carry out a dihybrid cross in petunias. You are unaware of the linkage relationship between the genes DBL and CAS. One parent has single flowers (dbl) and has and upright growth habit (cas) while the other parent is wildtype, having double flowers (DBL) and a cascading growth habit (CAS). You cross the two parents to produce a wild-type F1 and then carry out a testcross. (a) Write the genotypes, using the correct notation, of the two individuals used...
12. Imagine a cross between AaBb x aabb produces progeny in the following proportions: | AaBb 31 aabb | 33. Aabb | 12 aaBb] 13 Based on this information, are genes A and B linked, or do they assort independently (Chi-square test)? IF linked, what is the genetic distance between A and B? Are gene A and B in coupling (cis) or repulsion (trans) conformation in the AaBb parent? How can you tell?
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