Biology Answers

In snapdragons, red flower color W is not completely dominant over white w. The heterozygous condition produces pink flowers. What will be the rest of a cross between two pink-flowered snapdragons? Between a pink and a white one?

Identify the different types of chromosomal abnormalities that can lead to disease (e.g. insertions) and in a sentence or two, describe a disorder associated with one of these aberrations.

Explain what is meant by the term ‘linked genes’ with respect to homologous recombination.

Briefly summarize the processes of mitosis and meiosis indicating where the similarities lie and in which aspects they differ.

Discussed the concept of inheritance in regards to genetic traits. How does the Chromosomal Theory of Inheritance helped to advance our understanding of genetics?

What are the appropriate molecular cytogenetic approaches that should be used to diagnose the following cases? Why? Please explain.

1. Phenotypically abnormal child with balanced 46,XX,t(7;8)(q12;p22) karyotype.
2. A cancer case with a complex translocation that detected by karyotyping, but origins of involved chromosomes was not identified.
3. A balanced translocation carrier woman with recurrent abortions planning a new pregnancy.
4. Bronchial lavage material taken on suspicion of lung cancer
5. A case suspected of having terminal deletion in the short arm of chromosome 5.

Viruses that infect bacteria are called bacteriophages. Each bacteriophage
is completely engulfed by a bacterial cell.
multiplies outside a bacterial cell.
contains DNA and RNA.
has a protein coat.

difference between homology ,similarity and identity in tabular form

Using this estimate, the energy of the cabbage field was calculated as 15,600 kJ m-2. Does this represent the gross or net primary production? Give a reason for your answer.

The Arctic hare ingests 18,905 kJ m-2 yr-1 of food. Its net productivity is 2345kJm-2 yr-1. Calculate the total energy loss of the arctic hare.