Unit 7 Vocabulary

Which of these describes a genotype?

• The physical appearance of an organism

• The genetic makeup of an organism

• Different forms of the same gene

• A picture of an organisms chromosomes organized by size.

Which of these describes a phenotype?

• The physical appearance of an organism

• The genetic make up of an organism

• Different forms of the same gene

• A picture of an organisms chromosomes organized by size

Which of these describes a trait?

• A physical characteristic of an organism

• A section on a chromosome that determines specific characteristics

• The allele that is always expressed as long as it's there

• The allele that is masked by the dominant allele

Which of these describes a gene?

• A section on a chromosome that determines specific traits

• The physical characteristics of an organism

• The gamete that is formed by the male as a result of meiosis

• The gamete that is formed by the female as a result of meiosis

Which of these describes an allele?

• Different forms of the same gene; Can be dominant or recessive

• The physical characteristics of an organism

• The gamete produced by males

• The gamete produced by females

Which of these describes a dominant allele? SELECT 2 ANSWERS

• The allele that will always be expressed as long as at least one is present

• The allele that will be masked if it is not homozygous

• Represented by a capital letter

• Represented by a lower case letter

Which of these describes a recessive allele?

• The allele that is always expressed as long as at least one is present

• The allele that will be masked unless it is homozygous

• Represented by a capital letter

• Represented by a lower case letter

What does it mean to be homozygous?

• The genotype contains two of the same allele for a gene

• The genotype contains different alleles for a gene

• The mixture appears to be completely blended

• There is a lack of diversity in a population

What does it mean to be heterozygous?

• Organism has two of the same alleles for a gene

• Organism has two different alleles for a gene

• A mixture has distinct layers or other non-mixable parts

• A population has a good diversity

Which of these describes the Law of Segregation?

• The two alleles that an organism has for a gene will be separated during meiosis into different gametes.

• The two alleles that an organism has for a gene will stay together and go into the same gamete

• Somatic cells and gametes are not allowed on the same play ground

• The left and right hemispheres of the brain are not connected in any way