TTU Genetics Test 1 Exam Questions
& Answers (Grade A+)
Law of Segregation -
correct answer ✅Mendel's law that states that the pairs of
homologous chromosomes separate in meiosis so that only one
chromosome from each pair is present in each gamete
The F2 progeny of dihybrid F1 demonstrates -
correct answer ✅plants display a 9:3:3:1 phenotype ratio that
shows the operation of the law of independent assortment.
1.1 Define gene -
correct answer ✅Physical unit of hereditary
1.1 Define homologs -
correct answer ✅Homologous chromosomes or genes that have
the same genes and structure and pair with one another during
meiosis.
,TTU Genetics Test 1 Exam Questions
& Answers (Grade A+)
Problems 1. 8e True or false: Reciprocal crosses that produce
identical results demonstrate that a strain is pure-breeding. -
correct answer ✅False. Reciprocal crosses that produce identical
results indicate that the traits being studied are autosomal.
PP. Define genome -
correct answer ✅All the genetic information in an organism; all of
an organism's chromosomes.
PP. Define Last Universal Common Ancestor (LUCA) -
correct answer ✅Hypothetical early cell, or group of cells, that
gave rise to all subsequent life on Earth (3 domains of eukarya,
bacteria, archaea)
Chargaff's Rule -
correct answer ✅[A]=[T] and [G]=[C], percentages of adenine and
thymine are equal, and the percentages of guanine and cytosine
are equal for a wide array of organisms he studied
law of independent assortment -
correct answer ✅The alleles of different genes separate
independently of one another during gamete formation
, TTU Genetics Test 1 Exam Questions
& Answers (Grade A+)
PP. Where is the phosphodiester bond on nucleotides? -
correct answer ✅between the 5' phosphate group of one
nucleotide and the 3' hydroxyl of another
PP. What establishes polarity on DNA strands? -
correct answer ✅the 5' and 3' designations of the phosphate and
hydroxyl at the ends of the DNA strands
PP. Define exons and introns -
correct answer ✅exons code for amino acids, introns noncoding
segments that need to be removed by spliceosomes prior to
translation.
PP. Describe the movement of DNA in gel electrophoresis and why
it does this. -
& Answers (Grade A+)
Law of Segregation -
correct answer ✅Mendel's law that states that the pairs of
homologous chromosomes separate in meiosis so that only one
chromosome from each pair is present in each gamete
The F2 progeny of dihybrid F1 demonstrates -
correct answer ✅plants display a 9:3:3:1 phenotype ratio that
shows the operation of the law of independent assortment.
1.1 Define gene -
correct answer ✅Physical unit of hereditary
1.1 Define homologs -
correct answer ✅Homologous chromosomes or genes that have
the same genes and structure and pair with one another during
meiosis.
,TTU Genetics Test 1 Exam Questions
& Answers (Grade A+)
Problems 1. 8e True or false: Reciprocal crosses that produce
identical results demonstrate that a strain is pure-breeding. -
correct answer ✅False. Reciprocal crosses that produce identical
results indicate that the traits being studied are autosomal.
PP. Define genome -
correct answer ✅All the genetic information in an organism; all of
an organism's chromosomes.
PP. Define Last Universal Common Ancestor (LUCA) -
correct answer ✅Hypothetical early cell, or group of cells, that
gave rise to all subsequent life on Earth (3 domains of eukarya,
bacteria, archaea)
Chargaff's Rule -
correct answer ✅[A]=[T] and [G]=[C], percentages of adenine and
thymine are equal, and the percentages of guanine and cytosine
are equal for a wide array of organisms he studied
law of independent assortment -
correct answer ✅The alleles of different genes separate
independently of one another during gamete formation
, TTU Genetics Test 1 Exam Questions
& Answers (Grade A+)
PP. Where is the phosphodiester bond on nucleotides? -
correct answer ✅between the 5' phosphate group of one
nucleotide and the 3' hydroxyl of another
PP. What establishes polarity on DNA strands? -
correct answer ✅the 5' and 3' designations of the phosphate and
hydroxyl at the ends of the DNA strands
PP. Define exons and introns -
correct answer ✅exons code for amino acids, introns noncoding
segments that need to be removed by spliceosomes prior to
translation.
PP. Describe the movement of DNA in gel electrophoresis and why
it does this. -
