Mendel’s work with two-factor (dihybrid) crosses resulted in the development of
ID: 50438 • Letter: M
Question
Mendel’s work with two-factor (dihybrid) crosses resulted in the development of which of the following?
A. Chromosomal theory of inheritance
B. Particulate theory of inheritance
C. Law of biological evolution
D. Law of independent assortment
You are studying a diploid organism that has 14 sets of chromosomes. How many chromatids would this cell have in G2 phase?
A. 14
B. 7
C. 56
What types of amino acids are most responsible for the binding of DNA to histones?
A. Hydrophobic amino acids
B. Polar amino acids
C. Positively charged amino acids
Explanation / Answer
Mendel’s work with two-factor (dihybrid) crosses resulted in the development of which of the following?
Correct answer is: D. Law of independent assortment
Reason: Law of segregation and law of independent assortment were developed by dihybrid crosses.
You are studying a diploid organism that has 14 sets of chromosomes. How many chromatids would this cell have in G2 phase?
Correct answer is: C. 56
Reason: In G2 chromosomes will be duplicated to have 28 chromosomes.Each chromosome has 2 chromatids.So,28 chromosomes will have 28* 2 = 56 chromatids.
What types of amino acids are most responsible for the binding of DNA to histones?
Correct answer is:C. Positively charged amino acids
Reason: DNA being negatively charged, positively charged aminoacids present in histone (arginine and lysine) bind DNA to histones.