GENETICS AND BIOTECHNOLOGY

A .............is used to determine the genotype of a plant or animal

• inbreeding

• test cross

The offspring produced by .............are homozygous for most traits

• test cross

• inbreeding

What is the genotypic ratio of the offpring in the cross above ?

• 1:1

• 1:2:1

• all are homozygous recessive

• all are heterozygous

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-3

The cross could be used to determine the genotype of a parent with a dominant phenotype . What is this type of cross called ?

• a homozygous cross

• a heterozygous cross

• a test cross

• a parental cross

The result of this test cross would be

• 2Yy :2 yy

• 4 YY

• 1:YY: 2 Yy : 1 yy

• 4 Yy

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Select the advantages of selective breeding .

• Plants and animals can grow faster

• Time sensitive

• Expensive

• requires several generations to produce offspring with desired characteristics

Select the DISADVANTAGES OF SELECTIVE BREEDING

• Produce more offspring

• Time sensitive

• Produce more offspring

• expensive

Transgenic animals are produced by

• plasmids

• transformations

• ligase

• genetic engineering

Tags

NGSS.HS-LS3-2

Biologists use ...........to join two DNA molecules together

• ligase

• genetic engineering

• transformation

• plasmids

During ...........a cell takes in DNA from outside the cell.

• ligase

• transformation

• plasmids

• genetic engineering