Podcast Beta
Questions and Answers
Which process describes the way prokaryotes divide?
A homozygous individual has two different versions of the same gene.
False
What is the term for the joining of an egg and a sperm?
fertilization
_________ is when plants produce new individuals directly from the parent organism.
Signup and view all the answers
Which of the following is an example of asexual reproduction?
Signup and view all the answers
Which of the following is a characteristic of asexual reproduction?
Signup and view all the answers
Asexual reproduction can occur through the process of binary fission in prokaryotes.
Signup and view all the answers
Match the terms with their definitions:
Signup and view all the answers
Name two organisms that reproduce asexually by budding.
Signup and view all the answers
Regeneration refers to the creation of new organisms from separate parts of a mature organism.
Signup and view all the answers
What type of genetic expression is shown by heterozygous individuals?
Signup and view all the answers
In vegetative propagation, new individuals are produced directly from the __________ organism.
Signup and view all the answers
Match the asexual reproduction method to its example:
Signup and view all the answers
What is one disadvantage of asexual reproduction?
Signup and view all the answers
Sea stars reproduce asexually by fission.
Signup and view all the answers
What process involves a part of a mature organism breaking off and developing into a new organism?
Signup and view all the answers
What is a key advantage of sexual reproduction?
Signup and view all the answers
Both sperm and egg cells contain the same number of chromosomes as body cells.
Signup and view all the answers
Define internal fertilization.
Signup and view all the answers
In sexual reproduction, offspring inherit ___ of their DNA from each parent.
Signup and view all the answers
Match the reproductive processes with their descriptions:
Signup and view all the answers
Which of the following organisms primarily reproduce asexually?
Signup and view all the answers
Energy is not a concern in sexual reproduction compared to asexual reproduction.
Signup and view all the answers
What is the primary role of gametes in reproduction?
Signup and view all the answers
Study Notes
Asexual Reproduction Requirements
- Asexual reproduction involves only one parent
- There is no fertilization or gamete formation
- The process is quick
- Offspring are genetically identical to the parent
Types of Asexual Reproduction
- Binary Fission: DNA replicates, cell elongates, DNA moves to opposite poles, cell divides (e.g., E.coli)
- Budding: Cell division occurs at one site, a new individual grows and breaks off (e.g., Hydra, yeast)
- Fragmentation: Part of a mature organism breaks off and develops into a new organism (e.g., fungi, sea sponges, starfish)
- Vegetative propagation: Plants produce new individuals directly from the parent (e.g., runners in strawberry plants, plantlets in spider plants)
Advantages and Disadvantages of Asexual Reproduction
-
Advantages:
- Quick reproduction
- Offspring inherit beneficial traits
-
Disadvantages:
- Limited adaptability to environmental changes
- Offspring inherit harmful traits
Sexual Reproduction Requirements
- Involves two parents
- More complex organisms (e.g., humans, animals)
Sex Cells (Gametes)
- Sperm and egg cells are haploid (half the number of chromosomes as a body cell)
Fertilization
- Internal fertilization: Syngamy (union of male and female gametes) occurs inside the female body
- External fertilization: Syngamy occurs outside the female body, typically in water
Zygote Development
- After fertilization, a zygote forms and undergoes mitosis, increasing the number of cells
Genetic Inheritance
- Offspring inherit 50% of their nuclear DNA from the mother and 50% from the father
Genetic Variation in Sexual Reproduction
- The mixing of alleles from both parents during fertilization results in genetic diversity
Advantages and Disadvantages of Sexual Reproduction
-
Advantages:
- Genetic variation and increased adaptability
-
Disadvantages:
- Requires energy for mating, gestation, and offspring care
Comparing Plant and Animal Reproduction
- While both plants and animals can reproduce asexually or sexually, asexual reproduction is more common in plants
Sex-Linked Genes
- Characteristics influenced by genes carried on sex chromosomes (e.g., X and Y chromosomes)
- Manifest differently in female and male offspring due to the difference in their sex chromosomes
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
Explore the fascinating world of asexual reproduction through this quiz. Understand the requirements, different types of asexual reproduction, and its advantages and disadvantages. Test your knowledge about how organisms reproduce without the need for a mate!
