I need help with a quiz. I just want to clarify these are correct.
1. Which of the following traits is acquired
A. The number of petals that grow in a plant's flower
B. The wing shape of a wild bird
C. The ability of some gorillas to use sign language
D. A cheetah's ability to run faster than any other land animal
2.The height of a plant is dependent upon
A. its genes.
B. It's environment.
C. Both it's genes and it's environment.
D. Neither its genes nor its environment.
3.A gene is to a chromosome as
A. A peas is to a pod
B. A front is to a back
C. A bike is to a car
D. A building is to a window
4.What is heredity?
A. Heredity is acquired later in life
B. Heredity is the study of reproduction.
C. Heredity is the process of having offspring
D. Heredity is the passing of traits from parent to offspring
5.In pea plants, purple flowers are dominant over white flowers. Which Punnett square correctly shows the cross of a plant with a white flowers and a plant that is heterozygous for purple flowers?
A. ---- a a
A Aa Aa
a aa aa
B. ---- a a
A Aa Aa
A Aa Aa
C. ---- A a
A AA Aa
a Aa aa
D. ---- A A
A AA AA
a Aa Aa
6.Long hair is a recessive in cats. Which of the following Punnett squares shows a cross that would result in the probability that 75% of the offspring will have short hair?
A. ---- G g
G GG Gg
g Gg gg
B. ---- g g
g gg gg
g gg gg
C. ---- G g
g Gg gg
g Gg gg
D. ---- G G
g Gg Gg
g Gg Gg
7. How can an offspring inherit a recessive trait?
A. An offspring can inherit a recessive trait if one of its parents has the trait and the other is a homozygous for the dominant allele
B. An offspring can inherit a recessive trait if one of its parents is heterozygous for the recessive allele and the other is homosygous for the dominant allele
C. An offspring can inherit a recessive trait if both of its parents are homozygous for the dominant allele
D. An offspring can inherit a recessive trait if both of its parents are heterozyhous for the dominant allele
8. In the plant shown, the allele for the purple flower color is most likely
A. A dominant to the allele for white flower color
B. Recessive to the allele for white flower color
C. Codominant with the allele for white flower color
D. Incompletely dominant with the allele for white flower color
9. In humans the allele for straight hair show incomplete dominance the offspring of a curly-haired person and a straight haired person will have
A. Curly hair
B. Straight hair
C. Wavy hair
D. Curly hair and straight hair
10. In humans, the allele for curly hair and the allele for straight how show incomplete dominance. If two people with wavy hair have offspring, what percentage of their offspring would have expect to have wavy hair?
A. 100%
B. 75%
C. 50%
D. 25%
My Answers:
1.B
2.C
3.A
4.D
5.C
6.D
7.B
8.A
9.C
10. B
Here are the correct answers:
1. C. The ability of some gorillas to use sign language is a trait acquired through learning, not inherited.
2. C. Both its genes and its environment influence the height of a plant.
3. A. A gene is to a chromosome as a pea is to a pod. A gene is a specific segment of a chromosome, much like a pea is a specific part of a pod.
4. D. Heredity is the passing of traits from parent to offspring.
5. B. The Punnett square that shows the cross between a plant with white flowers and a plant that is heterozygous for purple flowers is:
- a a
A Aa Aa
A Aa Aa
6. A. The Punnett square that shows a cross resulting in a 75% probability of offspring with short hair is:
- g g
G Gg Gg
g Gg Gg
7. B. An offspring can inherit a recessive trait if one of its parents is heterozygous for the recessive allele and the other is homozygous for the dominant allele.
8. A. The allele for purple flower color is most likely dominant to the allele for white flower color.
9. D. The offspring of a curly-haired person and a straight-haired person will have a combination of curly hair and straight hair, meaning some offspring will have curly hair and some will have straight hair.
10. C. If two people with wavy hair have offspring, 50% of their offspring would be expected to have wavy hair.
To check if your answers are correct, let's go through each question and explain how to arrive at the correct answer:
1. Which of the following traits is acquired?
This question is asking about traits that are acquired, or learned, rather than inherited. A trait that is acquired is not passed down from parent to offspring through genes. Among the given options, the only trait that can be acquired is C. The ability of some gorillas to use sign language.
2. The height of a plant is dependent upon:
This question is asking about the factors that determine the height of a plant. Among the options, it is widely known that both genes and environment play a role in determining a plant's height. Therefore, the correct answer is C. Both its genes and its environment.
3. A gene is to a chromosome as:
This analogy question is asking about the relationship between a gene and a chromosome. A gene is a segment of DNA located on a chromosome. Among the options, the best analogy is A. A pea is to a pod, as a gene is to a chromosome.
4. What is heredity?
This question is asking about the definition of heredity. Heredity refers to the passing of traits from parent to offspring through genes. Among the options, the correct answer is D. Heredity is the passing of traits from parent to offspring.
5. In pea plants, purple flowers are dominant over white flowers. Which Punnett square correctly shows the cross of a plant with white flowers and a plant that is heterozygous for purple flowers?
This question is about using Punnett squares to determine the possible offspring genotypes. In this case, if one parent has white flowers (homozygous recessive - aa) and the other parent is heterozygous for purple flowers (Aa), the correct Punnett square is B. A Aa Aa, a aa aa.
6. Long hair is recessive in cats. Which of the following Punnett squares shows a cross that would result in a 75% probability of offspring having short hair?
This question is again about using Punnett squares to determine the possible offspring genotypes. In this case, if long hair is the recessive trait, and we want 75% of the offspring to have short hair, we need to cross a heterozygous cat (Gg) with a homozygous short-haired cat (gg). The correct Punnett square is A. G GG Gg, g Gg gg.
7. How can an offspring inherit a recessive trait?
This question is asking about how a recessive trait is inherited. To inherit a recessive trait, an offspring must receive two copies of the recessive allele (one from each parent). Among the options, the correct answer is B. An offspring can inherit a recessive trait if one of its parents is heterozygous for the recessive allele (carrier) and the other parent is homozygous for the dominant allele.
8. In the plant shown, the allele for the purple flower color is most likely:
Without an image or specific information about the plant shown, it is difficult to determine the answer with certainty. However, based on the information given, if the allele for purple flower color is dominant to the allele for white flower color, the correct answer would be A. A dominant to the allele for white flower color.
9. In humans, the allele for straight hair shows incomplete dominance. The offspring of a curly-haired person and a straight-haired person will have:
In incomplete dominance, the heterozygous genotype (one curly allele and one straight allele) results in a blend of the traits. Therefore, the correct answer is C. Wavy hair, as it is an intermediate between curly and straight hair.
10. In humans, the allele for curly hair and the allele for straight hair show incomplete dominance. If two people with wavy hair have offspring, what percentage of their offspring would you expect to have wavy hair?
In incomplete dominance, the heterozygous genotype (one curly allele and one straight allele) results in a blend of the traits. If both parents have wavy hair (heterozygous), then 50% of their offspring would have wavy hair (heterozygous), according to the principles of incomplete dominance. Therefore, the correct answer is C. 50%.
Based on the explanations provided above, your answers are as follows:
1. B - Correct
2. C - Correct
3. A - Correct
4. D - Correct
5. B - Incorrect (correct answer is A)
6. D - Incorrect (correct answer is A)
7. B - Correct
8. A - Depends on visual information (not possible to determine from given options)
9. C - Correct
10. B - Correct
Please review the answers for questions 5 and 6 based on the explanations provided.
1, 5, 6 and 7 are wrong.
8. No flower shown. Cannot copy and paste here.
I do not know about incomplete dominance.