Question

activity i
these are now replicated chromosomes connected by a centromere and are in a single reproductive cell. the pairing should look like the figure below.
replicated chromosomes
replicated chromosomes
questions will be answered in the online questions:

1. at which stage of meiosis did replication of the chromosomes occur in the germ cell?_____
2. t/f after replication, your duplicated chromatids are identical.
3. what is the sex of the parent #1 reptilobird?
4. how many original chromosomes prior to replication did your reptilobird have? __, how many does it have after replication?___

Explanation:

Step1: Recall meiosis stages

In meiosis, chromosome replication occurs in interphase before meiosis I starts.

Step2: Understand chromatid replication

DNA replication during interphase creates two identical sister - chromatids for each chromosome.

Step3: Determine sex from chromosomes

There is no information about parent #1 reptilobird's chromosomes to determine sex in the given content, so this question cannot be answered with the provided data.

Step4: Analyze chromosome number change

Before replication, the number of chromosomes is the normal diploid or haploid number for the organism. After replication, the number of chromosomes remains the same, but the number of chromatids doubles.

Answer:

1. Interphase
2. T
3. Cannot be determined
4. Original number depends on species; After replication, number of chromosomes remains the same as original