Identify the correct statements regarding linked genes:

I.	are located near each other on the same chromosome.
II.	violate the law of independent assortment.
III.	segregate together during meiosis.

 

1.	I & II only	2.	I & III only
3.	II & III only	4.	I, II & III

Resistance to sudden death is a dominant trait in soybeans. Two parent plants that are resistant to sudden death produce a progeny that is not resistant, but this progeny can pass the trait to its progeny in the next generation. This unusual pattern can be explained by?
1. Overdominance
2. Incomplete penetrance
3. Incomplete dominance
4. Variable expressivity

All the following regarding maternal effect genes are true except
1. It is located in the nuclear DNA.
2. Maternal genotype affects offspring phenotype.
3. It may control deposition of material into oocytes.
4. It must be located on the X chromosome.

Which of the following will demonstrate crossing over?
1. A fly that received only y+w+m+ and ywm chromosomes from her parents was able to transmit different combinations of alleles to her offspring.
2. A fly with a gray body and red eyes (wild type) was able to produce offspring with gray bodies and white eyes.
3. True breeding yellow, white, miniature flies always had yellow, white, miniature offspring.
4. None of these examples demonstrate crossing over.

What is the critical difference between genetic transfer in bacteria and sexual reproduction?

Gross large chromosomal aberrations can be rapidly identified by
1. Karyotype analysis.
2. Genetic studies.
3. Pedigree analysis.
4. DNA fingerprinting

Transduction, transformation, and conjugation are all characterized by:

1. I & II only
2. I & III only
3. II & III only
4. None of the three statements is correct

Lateral gene transfer in bacteria is facilitated by direct contact in?
1. Conjugation.
2. Transduction.
3. Transformation.
4. Transfection

In geranium, self-polination of plants with red flowers results in 1/4 red, 2/4 pink and 1/4 white flowered plants. This is most likely due to
1. The soil in which the pink plant was growing was deficient in a critical nutrient.
2. The pink plant had a new mutation, creating an allele to which the wild type "red" is incompletely dominant.
3. The pink plant had a new mutation, creating an allele which is incompletely dominant to red.
4. The pink plant had a new mutation, creating an allele which is codominant to "red".

The number of linkage groups in a plant with a normal diploid number of chromosomes in a somatic cell as 16 will be:
1. 16
2. 8
3. 4
4. It is impossible to tell from the information provided.