MUTATIONS
this type of point mutation swaps a single nitrogen base
substitution
An organism’s specific genetic makeup like TT or Tt
genotype
Which of the following sets of components is strictly found in a standard DNA nucleotide?
A nitrogenous base
A phosphate group
Deoxyribose
Which is not a phase of mitosis?
Prephase
what happens to phenotypes when neither allele is completely dominant, resulting in a blended intermediate trait like red and white flowers making pink .
incomplete dominance
A point mutation that changes an amino acid to a premature codon
nonsense mutation
Having two different alleles for a trait
heterozygous
Which of the following pairs correctly identifies the purine bases in DNA?
Adenine
Guanine
What is the final phase of Mitosis called?
Telophase
f a hamster can be white, black, or gray due to incomplete dominance, this is the expected genotype of the gray hamster
heterozygous
Which type of point mutation results in no change to the amino acid sequence of the resulting polypeptide?
slient mutation
pea plants, yellow seeds (Y) are dominant to green seeds (y). If you cross a heterozygous (Yy) plant with another heterozygous (Yy) plant, this percentage of the offspring will be green.
it will be 1 out of 4, 25 percent
According to Chargaff’s rules, if a double-stranded DNA sample is found to contain 22% Adenine, what percentage of Guanine does the sample contain
28
What phase of mitosis comes after anaphase?
telophase
two pink flowers heterozygous for incomplete dominance will yield this phenotypic ratio in the offspring
1 red : 2 pink : 1 white
A missense mutation is best described as a change in the DNA sequence that
substitutes and amino change
What percentage of offspring will be heterozygous (CC) if Parent 1 is Cc and Parent 2 is cc?
50
Whos famous X-ray diffraction image (known as Photo 51) provided crucial data on the helical dimensions of DNA used by Watson and Crick?
Rosalind franklin
How many daughter cells are formed after 1 round of Meiosis?
2
This inheritance pattern occurs when two equally dominant alleles are both expressed clearly at the same time rather than blending
codominance
What is the primary consequence of a nonsense mutation in a structural gene
introduction of a premature stop codon into the mRNA sequence
Capital letters in a Punnett square represent these kinds of alleles.
dominant alleles
This nitrogenous base pairs specifically with adenine in a standard DNA double helix
thymine
During which phase of Meiosis does crossing-over occur?
Prophase I
rhe ABO blood group system in humans showcases both codominance and this specific genetic concept having iA iB and i alleles
multiple alleles