Which type of chromosomal mutation involves a segment of a chromosome being reversed end to end?(1 point)

Question

Responses

Translocation
Translocation

Deletion
Deletion

Duplication
Duplication

Inversion
Inversion
Question 9
What does semi-conservative replication of DNA mean?(1 point)
Responses

Both strands of the DNA molecule are completed conserved.
Both strands of the DNA molecule are completed conserved.

Each newly synthesized DNA molecule consists of one original strand and one newly synthesized strand.
Each newly synthesized DNA molecule consists of one original strand and one newly synthesized strand.

DNA replication occurs without any conservation of the original DNA strands.
DNA replication occurs without any conservation of the original DNA strands.

One strand of the DNA molecule is completely conserved, while the other is completely replaced.
One strand of the DNA molecule is completely conserved, while the other is completely replaced.
Question 10

According to the codon chart above, what codon represents the amino acid Histidine (His)?

(1 point)
Responses

CAU
CAU

GGA
GGA

UUC
UUC

AAU
AAU
Question 11
What is the primary function of tRNA in protein synthesis?(1 point)
Responses

Unwinding the DNA double helix.
Unwinding the DNA double helix.

Forming peptide bonds between amino acids.
Forming peptide bonds between amino acids.

Binding to amino acids and delivering them to the ribosome.
Binding to amino acids and delivering them to the ribosome.

Carrying genetic information from DNA to the ribosome
Carrying genetic information from DNA to the ribosome
Question 12
How does the sugar in RNA differ from the sugar in DNA?(1 point)
Responses

RNA contains glucose, while DNA contains fructose
RNA contains glucose, while DNA contains fructose

RNA contains fructose, while DNA contains glucose
RNA contains fructose, while DNA contains glucose

RNA contains ribose, while DNA contains deoxyribose
RNA contains ribose, while DNA contains deoxyribose

RNA contains deoxyribose, while DNA contains ribose
RNA contains deoxyribose, while DNA contains ribose
Question 13
Complete the statement below.(1 point)
Genes contain the keys for constructing
Question 14
Give the complementary DNA strand for the following:

ATC GCT AAT

(1 point)
Responses

GCT ATC GGC
GCT ATC GGC

TAG CGA TTA
TAG CGA TTA

ATC GCT AAT
ATC GCT AAT

UAG CGA UUA
UAG CGA UUA
Question 15
Brown eyes (B) are dominant over blue eyes (b). Which of the following would be homozygous dominant for brown eyes?(1 point)
Responses

BB
BB

bb
bb

Bb
Bb

bB
bB
Question 16
Which is the complementary mRNA strand from the following DNA template?

TTC AGC

(1 point)
Responses

AAG TCG
AAG TCG

CCU GAU
CCU GAU

AAG UCG
AAG UCG

CCT GAT
CCT GAT
Question 17
In pea plants, tall plants (T) are dominant over short plants (t). If a heterozygous tall pea plant is crossed with a homozygous recessive short pea plant, what percentage of the offspring is expected to be tall?



(1 point)
Responses

25%
25%

0%
0%

75%
75%

50%
50%
Question 18
If a black chicken (BB) is crossed with a white chicken (WW) and incomplete dominance is observed, what are the expected phenotypes of the offspring?(1 point)
Responses

All black
All black

All red
All red

All white
All white

All gray
All gray
Question 19
In cattle, coat color is controlled by codominant alleles. A red-coated cow (RR) is crossed with a white-coated bull (WW). What are the expected phenotypes of the offspring?(1 point)
Responses

All red coat
All red coat

All white coat
All white coat

Red and white coat
Red and white coat

All pink coat
All pink coat
Question 20

Complete the mRNA sequence that will be formed from the DNA sequence below, then identify the amino acids using the codon chart provided above.

(6 points)
Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
TAC CGC CCC
mRNA Response area Response area Response area
Amino Acid Response area Response area Response area


MetArgLeuSerGGGAGUHisGCGAGAAUGUUUUTGAlaGlyGGUCCCGUU
Question 21
In pea plants, smooth seeds (S) are dominant over wrinkled seeds (s). What is the expected genotypic ratio in the offspring of a cross between two heterozygous individuals?(1 point)
Responses

1SS: 1Ss
1SS: 1Ss

1SS: 2Ss: 1ss
1SS: 2Ss: 1ss

3SS: 1ss
3SS: 1ss

1Ss: 1ss
1Ss: 1ss
Question 22
Which of the following best describes a chromosomal translocation mutation?(1 point)
Responses

A mutation where a chromosome loses a segment during cell division.
A mutation where a chromosome loses a segment during cell division.

A mutation where a segment of a chromosome is duplicated.
A mutation where a segment of a chromosome is duplicated.

A mutation where two chromosomes break and exchange segments.
A mutation where two chromosomes break and exchange segments.

A mutation where a nucleotide base is substituted with another
A mutation where a nucleotide base is substituted with another
Question 23
What is chromatin primarily composed of?(1 point)
Responses

Proteins and carbohydrates
Proteins and carbohydrates

DNA and proteins
DNA and proteins

RNA and proteins
RNA and proteins

DNA and lipids
DNA and lipids
Question 24
If a person with blood type A (genotype AO) and a person with blood type B (genotype BO) have children, what are the possible blood types of their offspring?(1 point)
Responses

O only
O only

A, B, AB, and O
A, B, AB, and O

A and B
A and B

A, B, and AB
A, B, and AB
Question 25
What are the sex chromosomes of a typical human male?(1 point)
Responses

XY
XY

YY
YY

XXYY
XXYY

XX
XX
Question 26
In three sentences, explain why hemophilia primarily affects males more than females. (3 points)
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Answer 1

Here are the answers to the questions you've provided:

Question 8: Which type of chromosomal mutation involves a segment of a chromosome being reversed end to end?

• Inversion

Question 9: What does semi-conservative replication of DNA mean?

• Each newly synthesized DNA molecule consists of one original strand and one newly synthesized strand.

Question 10: According to the codon chart above, what codon represents the amino acid Histidine (His)?

• CAU

Question 11: What is the primary function of tRNA in protein synthesis?

• Binding to amino acids and delivering them to the ribosome.

Question 12: How does the sugar in RNA differ from the sugar in DNA?

• RNA contains ribose, while DNA contains deoxyribose.

Question 13: Complete the statement below.

• Genes contain the keys for constructing proteins.

Question 14: Give the complementary DNA strand for the following: ATC GCT AAT.

• TAG CGA TTA

Question 15: Brown eyes (B) are dominant over blue eyes (b). Which of the following would be homozygous dominant for brown eyes?

• BB

Question 16: Which is the complementary mRNA strand from the following DNA template: TTC AGC?

• AAG UCG

Question 17: In pea plants, tall plants (T) are dominant over short plants (t). If a heterozygous tall pea plant is crossed with a homozygous recessive short pea plant, what percentage of the offspring is expected to be tall?

• 50%

Question 18: If a black chicken (BB) is crossed with a white chicken (WW) and incomplete dominance is observed, what are the expected phenotypes of the offspring?

• All gray

Question 19: In cattle, coat color is controlled by codominant alleles. A red-coated cow (RR) is crossed with a white-coated bull (WW). What are the expected phenotypes of the offspring?

• Red and white coat

Question 20: Complete the mRNA sequence that will be formed from the DNA sequence below, then identify the amino acids using the codon chart provided above.

• mRNA: AUG CGC CCC
• Amino Acids: Met-Arg-Pro

Question 21: In pea plants, smooth seeds (S) are dominant over wrinkled seeds (s). What is the expected genotypic ratio in the offspring of a cross between two heterozygous individuals?

• 1SS: 2Ss: 1ss

Question 22: Which of the following best describes a chromosomal translocation mutation?

• A mutation where two chromosomes break and exchange segments.

Question 23: What is chromatin primarily composed of?

• DNA and proteins

Question 24: If a person with blood type A (genotype AO) and a person with blood type B (genotype BO) have children, what are the possible blood types of their offspring?

• A, B, AB, and O

Question 25: What are the sex chromosomes of a typical human male?

• XY

Question 26: In three sentences, explain why hemophilia primarily affects males more than females.

• Hemophilia is an X-linked recessive disorder, meaning the gene responsible for the condition is located on the X chromosome. Males have only one X chromosome, so if they inherit the hemophilia allele, they will express the condition. Females have two X chromosomes; they must inherit two copies of the allele (one from each parent) to manifest the disorder, making it less common in females.

Feel free to ask for further explanations or clarifications!