20 Let\'s try a dinybnid cross Aabb X Aabo (Draw necessary.) a Punnem square b 1

Question

20 Let's try a dinybnid cross Aabb X Aabo (Draw necessary.) a Punnem square b 10A B 2 AADb 2 aaB8 2 aabb e a random assortment of genotypes 21. The pattern of human intelligence is an exampie of a. polygenic b. epistasis c, co-dominant C. e. pleiotropy 22. The inheritance pattern of pink fiowers is an example of a. polygenic b. epistasis c, co-dominant C. d. incomplete dominance e. pleiotropy 23. The inheritance pattern of human blood type is an example of a. polygenic b. epistasis c. co-dominant d. incomplete dominance e. pleiotropy 24. The inheritance pattern of coat color in dogs is an example of a. polygenic b. epistasis c. co-dominant d. incomplete dominance e. pleiotropy 25. The inheritance pattern of curly feathers and metabolic differences in chickens is an example df a. polygenic b. epistasis c. co-dominant d. incomplete dominance e. pleiotropy

Explanation / Answer

ANS 20-

AaBb x AaBb

gametes: AB, Ab, aB, ab x  AB, Ab, aB, ab

from above punnet square option e is valid

ans 21- a polygenic; inheritence of intelligence is controlled by many genes.

ans 22-c co-dominance; both red and white genes are expressed co-dominantly to produce pink flowers

ans 23- c co-dominance; each gene express itself co-dominantly

ans 24- b epistasis; one gene masks other

ans 25- e pleiotropy' the gene produce varied phenotype

ans 26- e all of the given statements are true for autosomal chromosomes

ans 27- a more likely to affect males, because of inheritance of X from mothers.

ans 28- true; exons are mostly found in prokaryotes, eukaryotes also contain introns

ans 29- false; a single gene can give rise to different proteins due to alternative splicing.

ans 30- True; bacterial DNA is not wrapped around histones

ans 31-true; promoter is present at the start codon

ans 32- true; genetic code is unvarying in all biological entities because it is universal

ans 33- false, made of nucleotides sugar and phosphorus group

ans 34- true; introns are removed in a process called splicing, done by using a machinery called spliceosome

ans 35- during mitosis and G2, G1 phases replication do not occur. true.

ans 36- false; some mutations help the organism to thrive through worse conditions

ans 37- true, frameshift mutations are caused by insertion and deletions of nucleotides from DNA sequences, disturbing genetic code.

AB Ab aB ab AB AABB AABb AaBB AaBb Ab AABb AAbb AaBb Aabb aB AaBB AaBb aaBB aaBb ab AaBb Aabb aaBb aabb

Related Questions

Navigate

• Browse (All)
• Browse 2
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.