Which of the followings would contain genetic material that is 100% identical? A: Homologous chromosomes B: Sister chromatids C: X and Y chromosomes D: Acrocentric chromosomes E: non-sister chromatids

If human chromosomes are stained on a slide, the resulting display, which is called a ______

Complex<br/>of DNA and proteins that makes up the chromosomes in a eukaryotic<br/>cell is called ______ .

Genes come in different versions called: A: alleles B: loci C: genetypes D: chromosomes E: genomes

C. elegans has 12 chromosomes that contain a total of ______ genes. A: 4,494 B: 6,340 C: 23,000 D: 27,000

中国大学MOOC: Genomic imprinting and genetic anticipation both involve the inhibition of specific genes, or chromosomes, based on parental origin.

The chromosome theory of inheritance states that A: All are correct B: chromosomes are made of DN C: genes are located on chromosomes. D: alleles of a gene segregate during cell division.

Most of the X-lined genes in humans are expressed in equal amounts between males and females because A: only one of the two X chromosomes is active in each cell in the females. B: X-linked genes on the X chromosome in males are expressed two-fold higher than in females. C: only one X chromosome is kept after fertilization. D: Half of the RNA transcripts from X chromosomes in female cells are degraded after transcription.

Linked<br/>genes are A: found<br/>on the same chromosome B: found<br/>in the same nucleus C: found<br/>only on sex chromosomes D: joined<br/>by a centromere

Mitosis is the normal process (by which) a cell divides, (each) new cell (ending) up with (a) same number of chromosomes as the parent cell.（） A: by which B: each C: ending D: a