genetics qz

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

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