Genetics

An allele whose trait only shows up when no dominant allele is present.

• hidden allele
• dominant allele
• recessive allele
• present allele

the chances of something happening

• dominant
• genotype
• phenotype
• probability

Tags

CCSS.7.SP.C.5

A characteristic that an organism can pass on to its offspring through its genes

• protein
• trait
• DNA
• gene

Tags

NGSS.HS-LS3-1

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-LS4-3

What characteristic would a child not inherit from parents?

• freckles
• eye color
• hair style
• dimples

Tags

NGSS.HS-LS3-1

R=round seed
r=wrinkled seed.
Cross a homozygous round with a wrinkled. Which statement predicts the results?

• offspring will be Rr
• offspring will be RR
• round seeds will be recessive to wrinkled
• Wrinkled will be observed in half of offspring

Tags

NGSS.HS-LS3-1

W=white hair
w= non-white hair
If you cross a horse with WW and a horse with ww what fraction of the offspring would be expected to have white hair?

• none
• 3/4
• 1/2
• all

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Pea plants can have green or yellow seeds. In a pea plant that is heterozygous for seed color, the allele for yellow seeds masks the effects of the allele of green seeds. Which of the following terms best describes the allele for yellow seeds?

• codominant
• recessive
• dominant
• sex-linked

A human usually has _____ total chromosomes.

• 6
• 22
• 4
• 46

AA and Aa always show up as

• dominant
• recessive

Tags

NGSS.HS-LS3-1