Mendelian Genetics

How many alleles do you inherit from EACH parent for a specific trait?

• 1

• 2

Tags

NGSS.HS-LS3-1

The physical expression of a trait is called the ...

• genotype

• phenotype

Segments of DNA that code for traits are called ....

• genes

• proteins

• alleles

Tags

NGSS.HS-LS3-1

Genotype: TT

• homozygous dominant

• homozygous recessive

• heterozygous dominant

Tags

NGSS.HS-LS3-1

Genotype: Aa

• homozygous dominant

• homozygous recessive

• heterozygous dominant

Tags

NGSS.HS-LS3-1

Cross 2 heterozygous tall pea plants. Tall (T) is dominant to short (t). What fraction of the offspring do you predict will be tall?

• 1/4

• 2/4

• 3/4

• 4/4

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS4-3

Which statement below describes DOMINANT alleles?

• expressed when at least one is present

• only expressed when 2 are present

Which of the following is a PHENOTYPE for flower color in pea plants?

• Pp

• PP

• Purple

Tags

NGSS.HS-LS3-2

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

• BB

• Bb

• bb

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In pea plants, tall (T) is dominant over short (t). If two heterozygous tall pea plants are mated, what is the the expected genotypic ratio of their offspring?

• 3 tall : 1 short

• 1 TT : 2 Tt : 1 tt

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2