Question 26

Question

Question 26
The Ultimate Guide to Guinea Pig Breeds, Markings and Colors – Kavee USA

In guinea pigs, rough coats (with lots of swirly cowlicks) are dominant over smooth coats. If a male homozygous recessive guinea pig is crossed with a female homozygous dominant guinea pig, what are the possible genotypes and phenotypes of the offspring?  Complete the Punnett square and the percentages of rough and smooth coated offspring.

***Please follow all Punnett square rules to complete this question. (Letters and numbers, only)

Please use the following: Rough = R and Smooth = r

offspring 1   	offspring 2   
  	offspring 3   	offspring 4

% rough

% smooth

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Question 27
For sneaky snakes, being rude (R) is dominant to being respectful (r).  Complete the cross below, and determine the phenotype (dominant : recessive) ratio.

R	r
r	#1	#2
r	#3	#4
 2 (#5) : 2( #6)

Column A
1.
#1:
#1
2.
#2:
#2
3.
#3:
#3
4.
#4:
#4
5.
#5:
#5
6.
#6:
#6
Column B
a.rude
b.sneaky
c.Rr
d.RR
e.rr
f.respectful
g.sweet
Question 28
In fruit flies, the color of the eyes is sex linked (on the X chromosome). Complete the cross of the flies in the image to

determine the possible offspring produced (Homozygous white eyed female x red eyed male). Red eyes are dominant (R), White eyes are recessive (r).

What percentage of the female offspring are expected to have red eyes?

a
100%
 b
75%
 c
50%
 d
25%
 e
0%
Question 29
Human blood types are determined by genes that follow the CODOMINANCE pattern of inheritance. There are two codominant alleles (A and B) and one recessive allele (o).

Fill in the genotype for each person based on the description:

Homozygous for the “B” allele   
Heterozygous for the “A” allele   
Type O   
Type AB   
Word Bank:
AAAoBBooABBo
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Question 30
Directions: The table lists the hair color and genotype of six individuals where black hair is dominant over blond. Use the table to answer any questions that follow.

HAIR COLOR
Name	Hair color	Alleles
Mr. Johnson	black	homozygous
Mrs. Johnson	blond	homozygous
Mr. Valdez	blond	heterozygous
Mrs. Valdez	black	heterozygous
Mr. Ellwood	black	heterozygous
Mrs. Ellwood	blond	homozygous

If Mr. and Mrs. Johnson had four children together, what color of hair would the children likely have?

a
All 4 of the children would have black hair.
 b
Only 3 of the children would have black hair, and 1 child would have blond hair.
 c
All 4 of the children would have blond hair.
 d
Only 2 of the children would have black hair, and 2 of the children would have blond hair.
Question 31
Determining the clinical course in patients with viral or bacterial  infection for acute cough — NIHR Community Healthcare MICYou are sick with a sore throat and fever. Your doctor does a throat swab and makes a microscope slide. Under the microscope, they find long chains of spherical cells that lack membrane bound organelles.

Do you have a viral or bacterial or fungal infection? How do you know?

a
You have a viral infection, as viruses form long cellular chains unique to your cells.
 b
You have a bacterial infection, as bacteria are simple prokaryotic cells - and you are not.
 c
You have a fungal infection, as fungi are simple prokaryotic cells - as are you.
 d
Impossible to determine from the information supplied.
Question 32
Viruses are often referred to as non-living infectious particles as they lack many characteristics of living organisms like cellular structure. They do not have the ability to carry out reproduction and metabolism without a host cell.

True or False and why?

a
False - viruses, like bacteria, do not have a cellular structure and yet, bacteria are considered living organisms.
 b
False - viruses do have a clear cellular structure, including a cell membrane called an envelope.
 c
True - if a living organism requires a cellular structure, even if they can reproduce - they are by definition non-living.
 d
False - viruses are able to reproduce and use energy without a host cell.
Question 33
Summarize the lytic cycle.

10.7A: The Lytic Life Cycle of Bacteriophages - Biology LibreTexts

a
A virus injects its genetic material into the host cell, copies itself using the host's structures and resources, and then forms new viruses that burst out of the host cell.
 b
A virus copies its own genetic material and then splits its cell membranes in half to form two identical viruses.
 c
A virus lays eggs on the host cell’s protein coat, which then hatch and move on to infect other cells.
 d
The viral DNA incorporates itself with the host cell’s and replicates whenever the host cell replicates itself.
Question 34
Quiz image
As per the karyotype, what is the biological gender of this person?

a
Female
 b
Male
 c
Impossible to determine
Question 35

a
male with dimples
 b
DD
 c
Dd
 d
female without dimples

GPT-4o mini · Answer

### Question 26 To determine the possible genotypes and phenotypes of the offspring when a homozygous recessive male (rr) is crossed with a homozygous dominant female (RR), the Punnett square will look like this: ``` R R ---------------- r | Rr | Rr | ---------------- r | Rr | Rr | ---------------- ``` **Blank 1:** Rr **Blank 2:** Rr **Blank 3:** Rr **Blank 4:** Rr **Blank 5:** % rough = 100% **Blank 6:** % smooth = 0% **Blank 7:** R **Blank 8:** R **Blank 9:** r **Blank 10:** None ### Question 27 For the cross Rr x rr: ``` R r ---------------- r | Rr | rr | ---------------- r | Rr | rr | ---------------- ``` 1. #1: Rr 2. #2: rr 3. #3: Rr 4. #4: rr 5. #5: 2 6. #6: 2 So, the ratio is 2 (rude) : 2 (respectful), or 1:1. ### Question 28 In a cross between a homozygous white-eyed female (X^r X^r) and a red-eyed male (X^R Y): ``` X^R Y -------------------- X^r | X^R X^r | X^r Y | -------------------- X^r | X^R X^r | X^r Y | -------------------- ``` Female offspring will have a genotype of X^R X^r (red eyes) and male offspring will have a genotype of X^r Y (white eyes). The percentage of female offspring expected to have red eyes: **100%** (all female offspring have red eyes). ### Question 29 Based on the descriptions provided: 1. Homozygous for the “B” allele: **BB** 2. Heterozygous for the “A” allele: **Aa** 3. Type O: **oo** 4. Type AB: **AB** **Blank 1:** BB **Blank 2:** Aa **Blank 3:** oo **Blank 4:** AB ### Question 30 The offspring of Mr. Johnson (black hair, homozygous) and Mrs. Johnson (blond hair, homozygous): Mr. Johnson's genotype is **BB** and Mrs. Johnson's genotype is **bb**. The cross would be: ``` B B ----------------- b | Bb | Bb | ----------------- b | Bb | Bb | ----------------- ``` Thus, all children will have black hair. Correct answer: **a. All 4 of the children would have black hair.** ### Question 31 The cells are described as "long chains of spherical cells that lack membrane-bound organelles." This indicates you likely have a bacterial infection, as bacteria are prokaryotic cells. **Correct answer:** b. You have a bacterial infection, as bacteria are simple prokaryotic cells - and you are not. ### Question 32 Given that viruses lack the characteristics of living organisms, including cellular structure: **Correct answer:** c. True - if a living organism requires a cellular structure, even if they can reproduce - they are by definition non-living. ### Question 33 The lytic cycle of bacteriophages involves a virus injecting its genetic material into the host cell and using the host cell's machinery to replicate itself, eventually causing the host cell to burst. **Correct answer:** a. A virus injects its genetic material into the host cell, copies itself using the host's structures and resources, and then forms new viruses that burst out of the host cell. ### Question 34 To determine the biological gender from a karyotype when not visible, the presence of XX indicates female and XY indicates male. **Correct answer:** a. Female (if XX), b. Male (if XY). (Since the karyotype is not provided here), you'd select one based on the gender chromosomes present. ### Question 35 This question isn't clear without context or specific criteria, but I can infer based on typical genetics examples: - If “a male with dimples” suggests a dominant trait, you could assign it as: **Correct answer:** a. male with dimples (if that's the dominance explained). **Responses may vary based on more specific questions.**