If all the offspring of a testcross are alike and resemble the organism being tested, then that parent is ____.

A) homozygous dominant
B) homozygous recessive
C) heterozygous
D) recessive
E) incompletely dominant

Question

Frank Rivero · Accepted Answer

Final Answer : A, Explanation :  In a testcross, an organism (whose genotype we want to determine) is crossed with a homozygous recessive individual. If all offspring resemble the tested parent, it indicates that the parent must be homozygous dominant, as only dominant alleles are present to be passed on, ensuring all offspring display the dominant phenotype.

If all the offspring of a testcross are alike and resemble the organism being tested, then that parent is ____.

A) homozygous dominant
B) homozygous recessive
C) heterozygous
D) recessive
E) incompletely dominant

Definitions

Learning Objectives

Learning Objectives

Related questions

If all the offspring of a testcross are alike and resemble the organism being tested, then that parent is ____.A) homozygous dominantB) homozygous recessiveC) heterozygousD) recessiveE) incompletely dominant

Definitions

Learning Objectives

Learning Objectives

Related questions

If all the offspring of a testcross are alike and resemble the organism being tested, then that parent is ____.

A) homozygous dominant
B) homozygous recessive
C) heterozygous
D) recessive
E) incompletely dominant