Mendelian & Nonmendelian Genetics

Recessive alleles may not be expressed because they are

• masked by the dominant allele
• the least common allele in the population
• the most common allele in the population
• less likely to having crossing over

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Refer to the illustration. Which box in the Punnett square represents a child who does not have freckles

• box 1
• box 2
• box 3
• box 4

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

What does heterozygous mean?

• An organism that has the same genes for a trait (TT or tt)
• An organism that has different genes for a trait (Tt)
• When neither gene is fully dominant; offspring is a mixture of both
• the different forms of a trait (hair color--> brown, blonde, red

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In the punnett square shown, what must the genotype of the missing parent be?

• BB
• Bb
• bb
• Tt

Tags

NGSS.HS-LS3-1

Having two of the SAME alleles for a trait (example HH or hh):

• homozygous
• heterozygous
• recessive
• dominant

Tags

NGSS.HS-LS3-1

An organism's genetic make-up:

• phenotype
• genotype
• dominant
• recessive

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

An organism's appearance or other observable characteristics:

• phentoype
• genotype
• recessive
• dominant

Tags

NGSS.HS-LS3-1

Which of the following is a phenotype?

• Aa
• red hair
• heterozygous
• BB

Tags

NGSS.HS-LS3-2

Mendel's law of segregation states that during meiosis, the alleles that control each trait separate, and only _________________ from each pair is/are passed to the offspring

• one allele
• the dominant trait
• two alleles
• the recessive trait

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is another way of saying "purebred"?

• homozygous
• dominant
• recessive
• heterozygous

Tags

NGSS.HS-LS3-1