Genetics Quiz Chromosomes & Genetics 1. A human being has _____ autosomes and ______ sex chromosomes 23, 1 22 pairs, 1 pair 23, 23 2, 2 2. A section of chromosomes that codes for a trait can be called a(n): nucleotide base-pair gene nucleus 3. Somatic cells of a human have ____ chromosomes and are called ____ 10, haploid 92, diploid 23, haploid 46, diploid 4. A person who receives an extra chromosome, could have: Heightened intelligence Down Syndrome Red eyes Polygenic traits 5. Each chromosome consists of two identical: genes nuclei chromatids bases 6. If a person receives an X and a Y chromosome, that person is: female male red eyed mentally challenged 7. Two alleles for pea plant height are designated T (tall) and t (dwarf). These alleles are found on: genes sex chromosomes ribosomes homologous chromosomes 8. An animal has 40 chromosomes in its gametes, how many chromosomes would you expect to find in this animal’s brain cells? 1 20 40 80 9. A picture of a person’s chromosomes is called a(n): karyotype syndrome chromatin fingerprint 10. During which phase of mitosis is DNA replicated? interphase prophase anaphase telophase Score = Correct answers:
