Psychology - Life Span - Chapter 3 - Book Work (Pt 3 - T/F) | Attempts: 204

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| By Nursing_student

Nursing_student

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Quizzes Created: 19 | Total Attempts: 44,424

Questions: 10 | Attempts: 204 | Updated: Mar 16, 2023

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Psychology 237 Life Span

Questions and Answers

1.

Most human characteristics are multifactorial, caused by the interaction of genetic and environmental factors.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
This statement is true because most human characteristics are influenced by both genetic and environmental factors. Genetic factors, such as inherited traits and genes, play a role in determining certain characteristics. However, environmental factors, such as upbringing, lifestyle, and experiences, also contribute to the development and expression of these characteristics. The interaction between genetic and environmental factors is complex and can vary for different traits and individuals.

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2.

Research suggests that susceptibility to alcoholism is at least partly the result of genetic inheritance.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
The given statement suggests that research has found a link between genetic inheritance and susceptibility to alcoholism. This means that individuals may have a predisposition to developing alcoholism based on their genetic makeup. The word "partly" indicates that while genetics play a role, there may be other factors involved as well. Therefore, the correct answer is True, as research supports the idea that genetic inheritance contributes to alcoholism susceptibility.

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3.

The human reproductive cells (ova and sperm) are called gametes.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
The statement is true because gametes are indeed the reproductive cells in humans. Ova, also known as eggs, are the female gametes, while sperm are the male gametes. These cells are specialized for sexual reproduction and are responsible for transmitting genetic information from one generation to the next.

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4.

Only a very few human traits are polygenic.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
This statement is false because many human traits are polygenic, meaning they are influenced by multiple genes. Polygenic traits include height, intelligence, and skin color, among others. These traits are not determined by a single gene but are the result of the interaction of multiple genes. Therefore, the statement that only a very few human traits are polygenic is incorrect.

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5.

The zygote contains all the biologically inherited information -the genes and chromosomes- that a person will have during his or her life.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
The zygote is formed when a sperm fertilizes an egg, and it contains all the genetic material necessary for the development of an individual. This genetic material includes the genes and chromosomes that will determine an individual's traits and characteristics throughout their life. As the zygote divides and develops into an embryo, this genetic information is passed on to every cell in the body. Therefore, it is correct to say that the zygote contains all the biologically inherited information a person will have during their life.

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6.

A couple should probably seek genetic counseling if several earlier pregnancies ended in spontaneous abortion.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
If a couple has experienced several earlier pregnancies that ended in spontaneous abortion, it is advisable for them to seek genetic counseling. This is because recurrent spontaneous abortions may indicate underlying genetic issues or abnormalities that could be inherited by future pregnancies. Genetic counseling can help identify these potential genetic factors, provide information about the risks involved, and offer guidance on possible preventive measures or treatment options to increase the chances of a successful pregnancy.

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7.

Many genetic conditions are recessive; thus, a child will have the condition even if only the mother carries the gene.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
This statement is false because for a child to have a recessive genetic condition, both parents must carry the gene. If only the mother carries the gene, but the father does not, then the child will not have the condition. The condition can only be passed on to the child if both parents are carriers of the gene.

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8.

Two people who have the same phenotype may have a different genotype for a trait such as eye color.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
This statement is true because phenotype refers to the observable physical characteristics of an organism, such as eye color. Genotype, on the other hand, refers to the genetic makeup or combination of alleles that an organism carries for a particular trait. Since there can be different combinations of alleles that can result in the same phenotype, it is possible for two individuals with the same phenotype, such as having brown eyes, to have different genotypes.

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9.

When cells divide to produce reproductive cells (gametes) each sperm or ovum receives only 23 chromosomes, half as many as the original cell.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
During the process of cell division to create reproductive cells, known as gametes, each gamete receives only 23 chromosomes. This is because gametes are produced through a specialized form of cell division called meiosis, which involves two rounds of division. In the first round, the original cell's chromosomes are duplicated, resulting in two sets of chromosomes. Then, in the second round, these sets are separated, resulting in four gametes, each containing only one set of chromosomes (23 in humans). Therefore, the statement that each sperm or ovum receives only 23 chromosomes, half as many as the original cell, is true.

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10.

Most genes have only one function
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
The statement "Most genes have only one function" is false. Genes are segments of DNA that contain instructions for the production of proteins, which are responsible for various functions in the body. Many genes have multiple functions and can be involved in different biological processes. This concept is known as gene pleiotropy. Additionally, some genes can also have alternative splicing, where different combinations of exons are used to produce different protein isoforms, further increasing the functional diversity of genes. Therefore, it is incorrect to claim that most genes have only one function.

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Current Version
Mar 16, 2023

Quiz Edited by
ProProfs Editorial Team
Apr 06, 2009

Quiz Created by
Nursing_student

Psychology - Life Span - Chapter 3 - Book Work (Pt 3 - T/F)

Most human characteristics are multifactorial, caused by the interaction of genetic and environmental factors.

Research suggests that susceptibility to alcoholism is at least partly the result of genetic inheritance.

The human reproductive cells (ova and sperm) are called gametes.

Only a very few human traits are polygenic.

The zygote contains all the biologically inherited information -the genes and chromosomes- that a person will have during his or her life.

A couple should probably seek genetic counseling if several earlier pregnancies ended in spontaneous abortion.

Many genetic conditions are recessive; thus, a child will have the condition even if only the mother carries the gene.

Two people who have the same phenotype may have a different genotype for a trait such as eye color.

When cells divide to produce reproductive cells (gametes) each sperm or ovum receives only 23 chromosomes, half as many as the original cell.

Most genes have only one function