Question

11.
Choose the best answer.

The process of turning genes on and off is known as ___.

intermediate expression

gene modification

genetic engineering

gene regulation
12.
Identify the nucleotides in RNA. Select all that apply.

uracil

guanine

valine

cytosine

thymine

methionine

adenine
13.
Choose the best answer.

The building blocks of proteins are _________.

codons

nucleotides

amino acids

nucleic acids
14.
Choose the best answer.

A(n) ___ is a distinguishing characteristic or quality for which the phenotype (appearance) depends on alleles in multiple genes.

physical trait

polygenic trait

inherited trait

pleiotropy
15.
Choose the best answer.

This is where crossing over happens.

Anaphase I

Metaphase I

Prophase I

Interphase
16.
Choose the best answer.

___ result from inheriting two defective recessive alleles of a gene, one from each parent.

Dominant genetic disorders

Regulating genes

Polygenic Traits

Recessive genetic disorders
17.
Choose the best answer.

A(n) ___ is a single gene disorder that occurs in the heterozygous state—when an individual possesses one defective copy of the relevant gene but also one normal copy.

dominant genetic disorder

incomplete penetrance

intermediate expression

recessive genetic disorder
18.
Choose the best answer.

A ___ is a permanent change in the DNA sequence of a gene.

codominance

pleiotropy

mutation

modifying gene
19.
Choose the best answer.

___ is a form of artificial DNA that is created by combining two or more sequences that would not normally occur together.

Gene therapy

Recombinant DNA

Bacterium

Complex inheritance
20.
Choose the best answer.

Meiosis produces haploid cells.

6

2

4

8

Answer 1

11. gene regulation

12. uracil; guanine; cytosine; adenine

13. amino acids

14. polygenic trait

15. Prophase I

16. Recessive genetic disorders

17. dominant genetic disorder

18. mutation

19. Recombinant DNA

20. 4