What is shown in Figure 11/4 crossing over?
What is shown in Figure 11-4? haploid cells. What is formed at the end of meiosis? meiosis I produces 2 haploid daughter cells, but mitosis produces 2 diploid daughter cells.
Which stage does each cell have a single copy of each gene?
Explain your answer. Each cell in the Stage G, telophase 2, has a single copy of each gene.
Between which two genes does crossing over occur most frequently?
Crossing-over occurs most frequently between the star eye gene and the black body gene.
During what stage of meiosis might new allele combinations form?
When chromatids “cross over,” homologous chromosomes trade pieces of genetic material, resulting in novel combinations of alleles, though the same genes are still present. Crossing over occurs during prophase I of meiosis before tetrads are aligned along the equator in metaphase I.
What are the sites of crossing over Class 11?
Complete answer: Crossing over is the exchange of chromosomes between the non-sister chromatids of homologous chromosomes during meiosis. Genetic material of the plant and animal cell are arranged in a compact thread-like structure known as chromosome, inside the nucleus.
What are 2n cells?
Diploid Cells The diploid chromosome number is the number of chromosomes within a cell’s nucleus. This number is represented as 2n. It varies across organisms. Somatic cells (body cells excluding sex cells) are diploid.
What is called linkage?
Listen to pronunciation. (LING-kij) The tendency for genes or segments of DNA closely positioned along a chromosome to segregate together at meiosis, and therefore be inherited together.
What is coupling and repulsion?
Coupling refers to the case where dominant alleles are on the same homologue chromosome and both recessive alleles are on the other homologue chromosome. Repulsion refers to the case where each homologous chromosome has one dominant and one recessive allele from the two genes.
Is liver cell haploid?
Liver cells are all diploid containing 24 chromosomes.