26. DNA from a bacterial strain that is his* leu* lac* is used to transform a strain that is his leu lac". The following percentages of cells are transformed: Donor Recipient strain strain Genotype of Percentage transformed cells of all cells his* his leu his* leu* leu* lact 0.02 lac lac* his* leu* lac 0.00 hist leu lac* 2.00 his* leu lac 4.00 his leu* lac* 0.10 his leu 3.00 lac* his leu* lac 1.50

Q: Given that most chromosomes occur in homologous pairs, do most genes also occur in pairs?

A: Human beings have 23 pairs of chromosomes. Out of which 22 pairs are called autosomes and one pair…

Q: Can simple translocations ever be balanced? I know with reciprocal translocations that if you're…

A: Exchange of genetic information between different parts of the chromosome is called genetic…

Q: How many genes are there on chromosome 3?

A: All cellular systems are controlled by proteins. The instruction for the synthesis of proteins is…

Q: Why do you think there are no viable trisomies of chromosome 1?

A: Chromosome 1 is the largest chromosome in human. Approximately 8% of the total DNA is found in this…

Q: What does recombination maps of a chromosome show?

A: In the field of genetics, understanding the organization of genetic material on a chromosome is…

Q: What are genes located on the same chromosome?

A: Genetic recombination refers to the rearrangement of DNA sequences by the breakage and rejoining of…

Q: Homologous chromosomes can be either monads or dyads. Explain. How is it possible to have…

A: Homologous chromosomes are paired chromosomes. In this pair one chromosome comes from mother and one…

Q: How is it still balanced if, let's say we have 100% chromosome A and 100% chromosome B. In simple…

A: Translocation is a phenomena in which genetic material is transferred from one chromosome to be…

Q: How many genes are there on chromosome 6?

A: In all the living organisms, the genetic material is organized into a specific structure known as a…

Q: what criteria or features are used to identify each chromosome by number?

A: The basis of cytogenetics is laid on the study of chromosomes. The isolation and identification of…

Q: approximate and base pairs) between the largest and s

A: Chromosome- A structure found inside the nucleus of a cell is refers as the chromosome.  It is made…

Q: At what point duplicated chromosomes are joined?

A: Chromosomes are present inside the cell nucleus and made up of DNA (Deoxyribonucleic acid) molecules…

Q: Here are the results of the testcross: Green-eyes, wild-type wings 245 Green-eyes, miniature wings…

A: 6) The number of flies with green eyes and and miniature wings are 232, these organisms are least in…

Q: What chromosome rearrangement is thought to be the source of new genes?

A: Chromosome rearrangement is a change in the order of base sequences along one or more chromosomes.…

Q: hat is the 2n number for the dog?  What is the n number for the dog?

A: 2n number of the dog=78

Q: Why are the X and Y chromosomes not considered homologous even though they recombine at the PAR…

A: Sex chromosomes are a type of chromosome that participates in sex determination. Humans and most…

Q: What is nonautonomous transposition?

A: Transposition refers to the translocation in which the segment of the chromosome is relocated…

Q: What is the difference between alleles and homologous chromosomes?

A: The term 'chromosome' has been derived from the Greek words which means 'color (chroma) and body…

Q: What is dosage compensation with respect to the sex chromosomes? Briefly explain how this is…

A: The method by which organisms adjust gene expression between individuals of different biological…

Q: describe a specific example of chromosome abnormality that leads to human cancers, such as leukemia,…

A: Chromosomal aberrations are changes in the number and arrangement of genes in the chromosomes. They…

Q: The karyotype of a young girl who is affected with Down syndrome revealed that she has 46…

A: Changes or alterations in the genetic material of an organism that lead to mutations. Mutations are…

Genetic Evolution

Sexual reproduction produces distinct population variations. Heredity determines the traits and qualities to be passed down to the progeny. Over time, this variation within-species is also affected by the process of human evolution. The study of how genetic variation leads to evolutionary changes is known as genetic evolution. If a trait helps an organism to survive and reproduce, it is more likely to be passed down the generations. It is rare that such traits result in a completely distinct set of traits in descendants than the ancestral population; this can result in the emergence of a new species.