Question

A heterozygous pea plant that is tall with yellow seeds, TtYy, isallowed to self-fertilize. Gametes produced?
Cross over is the physical exchange of chromosome pieces. Crossover occurs during which of the following events?

A. Mitosis
B. Meiosis I
C. Meiosis II
D. Both Mitosis and Meiosis I
E. Both Mitosis and Meiosis II

Which of the following statement about double fertilization iscorrect?

A. It occurs in higher plants
B. In double fertilization, one sperm fertilizes the egg, a secondsperm unites with polar cell to produce the endosperm
C. Double fertilization ensures that the endosperm (which uses alarge amount of plant resources) will develop only when an egg cellhas been fertilized
D. all of the above statement is correct
E. All the above statement is incorrect

A true breeding line of green pod pea plants is crossed with atrue-breeding line of yellow pod plants. All of their offspringhave green pods. From this information it can be stated that thegreen color is _____ to the yellow color.
recessive
dominant
subservient
Blended

In a dihybrid cross using Mendelian inheritance, if both parentsare heterozygous for both traits, what will be the phenotypic ratioof their offspring?
3 : 1
1 : 2 : 1
1 : 1
9 : 3 : 3 : 1

The genetic composition of an individual is called its_____________.
phenotype
Genotype

The sex of fruit fly with two XX chromosome and four sets ofautosome will be
Male
Female