1.
The diagram below represents the human female reproductive system.
Exposure to radiation or certain chemicals could alter the genetic information in the gametes that form in the structure.
Correct Answer
B. B
Explanation
Exposure to radiation or certain chemicals can cause changes in the genetic information of the gametes formed in the human female reproductive system. This can lead to alterations in the DNA sequence and potentially result in genetic mutations or abnormalities in offspring. Therefore, it is important to minimize exposure to harmful substances to ensure the proper development and functioning of the reproductive system.
2.
The diagram below represents stages in the processes of reproduction and development in an animal.
Cells containing only half of the genetic information characteristic of this species are found at
Correct Answer
A. A
Explanation
The diagram represents stages in the processes of reproduction and development in an animal. The cells containing only half of the genetic information characteristic of this species are found at stage A.
3.
The diagram below represents four different species of bacteria.
Which statement is correct concerning the chances of survival for these species if there is a change in the environment?
Correct Answer
A. Species A has the best chance of survival because it has the most genetic diversity.
Explanation
Species A has the best chance of survival because it has the most genetic diversity. Genetic diversity allows a species to adapt and evolve more easily in response to changes in the environment. This means that if there is a change in the environment, species A is more likely to have individuals with traits that can help them survive and reproduce. In contrast, species B and D may struggle to adapt because they have less genetic diversity. Species C having no gene mutations does not necessarily give it an advantage in terms of survival. The statement about bacteria reproducing asexually is not relevant to the question.
4.
A pattern of reproduction and growth in a one-celled organism is shown below.
Which statement best describes this pattern of reproduction?
Correct Answer
A. All genetic material comes from one parent.
Explanation
This pattern of reproduction in a one-celled organism shows that all genetic material comes from one parent. This means that the offspring inherits all of its genetic material from a single parent organism, rather than receiving genetic material from both parents.
5.
The diagram below represents a system in the human body.
The primary function of structure X is to
Correct Answer
D. Form gametes that may be involved in fertilization
6.
The puppies shown in the photograph below are all from the same litter.
The differences seen within this group of puppies are most likely due to
Correct Answer
D. Sorting and recombination of genes
Explanation
The differences seen within this group of puppies are most likely due to sorting and recombination of genes. This is because puppies from the same litter inherit different combinations of genes from their parents through sexual reproduction. During the process of meiosis, genetic material is shuffled and recombined, leading to variations in traits among the puppies.
7.
The sorting and recombining of genes during meiosis and fertilization usually leads to the production of?
Correct Answer
D. Offspring with some traits that did not appear in their parents
Explanation
During meiosis and fertilization, the sorting and recombining of genes result in the formation of offspring with some traits that did not appear in their parents. This is because meiosis involves the shuffling and exchange of genetic material between homologous chromosomes, leading to genetic variation. Fertilization then combines the genetic material from two parents, further increasing the potential for new combinations of traits in the offspring. Thus, the offspring can inherit a unique combination of genes that may result in traits not seen in either parent.
8.
Which statement concerning the reproductive cells in the diagram below is correct?
Correct Answer
C. Each of these cells contains only half the genetic information necessary for the formation of an offspring.
Explanation
The correct answer is that each of these cells contains only half the genetic information necessary for the formation of an offspring. This is because the diagram represents the process of meiosis, which is the specialized cell division that produces reproductive cells (gametes) with half the number of chromosomes as the parent cell. During meiosis, the genetic material is shuffled and recombined, resulting in genetic diversity in the offspring. Therefore, if one of these cells fertilizes an egg, the resulting offspring will have a combination of genetic information from both parents, rather than being identical to the father.
9.
A reproductive system is represented in the diagram below.
If an injury occurred to the structure labeled A, the most likely result would be a problem with
Correct Answer
A. Delivery of sperm
Explanation
If an injury occurred to the structure labeled A, the most likely result would be a problem with the delivery of sperm. This is because structure A is likely to be a part of the male reproductive system, such as the vas deferens or the ejaculatory duct, which are responsible for transporting sperm from the testes to the urethra for ejaculation. If this structure is injured, it could disrupt the flow of sperm and lead to difficulties in delivering sperm during ejaculation.
10.
The diagram below represents part of a human reproductive system.
One of the functions of this part of the system is to
Correct Answer
B. Provide nutritional support for the embryo
Explanation
The part of the human reproductive system represented in the diagram is most likely the placenta. The placenta is responsible for providing nutritional support to the developing embryo. It acts as a connection between the mother and the embryo, allowing the exchange of nutrients and waste products. Through the placenta, the embryo receives essential nutrients for its growth and development.