Genetics Test Review

How many chromosomes are there in a human somatic cell?

• 23

• 46

• 44

• 22

What type of cells in the human body are haploid?

• Somatic cells

• Gametes

• Both somatic cells and gametes

• Neither somatic cells nor gametes

What process do somatic cells undergo to divide?

• Meiosis

• Mitosis

• Fertilization

• Crossing over

What is the result of a fertilized egg?

• Sperm

• Egg

• Zygote

• Embryo

What is a dominant trait?

• A trait that will only be expressed if no dominant trait is present

• A trait that will be expressed if it is present, represented by a lowercase letter

• A trait that will be expressed if it is present, represented by a capital letter

• A trait that has no impact on the phenotype

What is the difference between homozygous and heterozygous alleles?

• Homozygous alleles are different, while heterozygous alleles are the same

• Homozygous alleles are the same, while heterozygous alleles are different

• Homozygous alleles are dominant, while heterozygous alleles are recessive

• Homozygous alleles are recessive, while heterozygous alleles are dominant

What is the purpose of gel electrophoresis in genetic technology?

• To create a genetic modification

• To compare DNA fragment sizes

• To fertilize an egg

• To edit parts of the genome

What is the genotype of an organism?

• The physical traits you can see

• The organism's alleles, the letters

• The same allele in the organism

• Different alleles in the organism

What is a phenotype?

• The organism's alleles

• The physical traits you can see

• The genetic technology used to edit genes

• The process of crossing two traits

What is CRISPR-Cas9 used for in genetic technology?

• To compare DNA fragment sizes

• To activate or deactivate specific genes

• To cross two different traits

• To determine the number of chromosomes in a cell