Question

During which stage of meiosis does crossing over occur?(1 point)
Responses

prophase II
prophase two

telophase I
telophase one

anaphase I
anaphase one

prophase I

Identify the mutation below that would be passed on to living offspring if it happened in a parent.(1 point)
Responses

a substitution error that takes place in a somatic cells that causes skin cancer
a substitution error that takes place in a somatic cells that causes skin cancer

an insertion mutation in a gamete that deactivates a gene for hair color
an insertion mutation in a gamete that deactivates a gene for hair color

a chromosomal deletion that affects the ability of blood to carry oxygen
a chromosomal deletion that affects the ability of blood to carry oxygen

a silent mutation in the genes of the pancreas cells that code for insulin

Methylation is an example of(1 point)
Responses

gene editing
gene editing

DNA replication
DNA replication

epigenetics
epigenetics

gene mapping

Answer 1

1) prophase I — crossing over occurs during prophase I of meiosis.

2) an insertion mutation in a gamete that deactivates a gene for hair color — only mutations in gametes (germline) can be inherited by offspring.

3) epigenetics — DNA methylation is an epigenetic modification that alters gene expression without changing the DNA sequence.