3. Amoeba Sisters Dihybrid Crosses

H represents the allele for hairy, and h represents the allele for hairless. S represents the allele for sink liker, and s represents the allele for sink disliker. Cross a hairy male cat that dislikes sinks (Hhss) with a hairless female cat that likes sinks (hhSs). What are the possible allele combinations that could appear in the gametes of the male cat?

• HS Hs hS hs

• Hs hs

• HS Hs

• hS hs

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

H represents the allele for hairy, and h represents the allele for hairless. S represents the allele for sink liker, and s represents the allele for sink disliker. Cross a hairy male cat that dislikes sinks (Hhss) with a hairless female cat that likes sinks (hhSs). What are the possible allele combinations that could appear in the gametes of the female cat?

• HS Hs hS hs

• HS hs

• Hs hs

• hS hs

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

H represents the allele for hairy, and h represents the allele for hairless. S represents the allele for sink liker, and s represents the allele for sink disliker. Cross a hairy male cat that dislikes sinks (Hhss) with a hairless female cat that likes sinks (hhSs). What is the genotypic ratio of this cross?

• 4 HhSs: 4 Hhss: 4 hhSs: 4 hhss

• 8 HhSs: 8 hhss

• 2 HHSs: 6 HHss: 6 hhSS: 2 hhSs

• 1 hairy sink liker : 1 hairy sink disliker : 1 hairless sink liker : 1 hairless sink disliker

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Genotypic ratios and phenotypic ratios are always the same?

• True

• False

H represents the allele for hairy, and h represents the allele for hairless. S represents the allele for sink liker, and s represents the allele for sink disliker. Cross a hairy male cat that dislikes sinks (Hhss) with a hairless female cat that likes sinks (hhSs). What are the chances of these two cats having an offspring that is a hairy sink liker?

• 0%

• 25%

• 50%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3