Question

2. Mendel's Principle of Segregation (In the formation of gametes, the paired hereditary determinants (genes) separate (segregate) in such a way that each gamete is equally likely to contain either member of a pair) was later supported by microscopic studies of chromosome movement during meiosis. Which of the following symbolic representations best depicts the Principle of Segregation? A. AaBb cells ---------→ roughly 50% Aa gametes and 50% Bb gametes B. Aa cells ------------→ 100% Aa gametes C. AaBb cells --------> roughly 25% AB gametes, 25% aB gametes, 25% Ab gametes, 25% ab gametes D. Aa cells ------------→ roughly 50% AA gametes and 50% aa gametes E. Aa cells -----------→ roughly 50% A gametes and 50% a gametes 3. From AaBb cells going through meiosis, you would obtain haploids with genotypes in the following proportions: roughly 25% AB gametes, 25% aB gametes, 25% Ab gametes, 25% ab gametes. These proportions reflect which of the following of Mendel's Principles? A. Mendel's Principle of Segregation (“In the formation of gametes, the paired hereditary determinants (genes) separate (segregate) in such a way that each gamete is equally likely to contain either member of a pair"). B. Mendel's Principle of Segregation (“We hold these truths to be self-evident: that all men are created equal, ..."). C. Mendel's Principle of Independent Assortment (“Teenagers gradually develop independence as they separate (segregate) from their parents and embark on the search for a mate"). D. Mendel's Principle of Independent Assortment (“Segregation of members of any pair of alleles is independent of the segregation of any other pairs, in the formation of reproductive cells").

Answer 1

Answer to question 8

E is the correct answer.

Law of segregation states that during gamete formation the alleles of a pair segregate from each other such that a gamete receives only one allele.It is also known as law of purity of gametes.

Aa cells give 50% A gametes and 50%a gametes as per the law.

Reason for why other options are wrong

A-AaBb cell should give 25% each AB,Ab,aB and ab

B-Aa cells should segregate as A and a

C-This option explains law of independent assortment

D-Aa cell will not give 50%AA and 50%aa gametes.