Meiosis & Genetic Variation 2024

What is the process that produces gametes, such as sperm and egg cells?

• Mitosis

• Crossing Over

• Fertilization

• Meiosis

What is gene mutation?

• A natural part of life that always leads to genetic disorders

• A process that happens only in cells that make eggs and sperm

• A process that creates genetic variation

• A change in the DNA sequence of our genes

What is the result of nondisjunction during cell division?

• Normal numbers of chromosomes in daughter cells

• A decrease in the risk of genetic disorders

• Aneuploidy with abnormal numbers of chromosomes in daughter cells

• Increased genetic variation in the resulting gametes

According to the law of independent assortment, how are alleles of different genes sorted into gametes?

• Dependent on each other

• Influenced by the alleles received for other genes

• Randomly and independently of each other

• Only in a specific order

What is crossing over during meiosis?

• A process that creates identical gametes

• A genetic swap between homologous chromosomes

• A process that only happens in plants

• A way for our genes to mix and match during mitosis

Why is genetic variation important for the survival of a species?

• It decreases the possibilities for how genes can be combined

• It makes all individuals the same

• It allows for unique and different offspring

• It makes it harder for individuals to adapt to changes in their environment

What is one reason for genetic variation during sexual reproduction?

• Dependent assortment of chromosomes

• A decrease in the number of possibilities for gene combinations

• A lack of crossing over during meiosis

• Random fertilization

What is the main purpose of meiosis?

• To produce identical cells with two copies of each chromosome

• To ensure that all offspring are genetically identical to the parents

• To prevent gene mutation

• To create genetic variation and produce gametes