Question
In a classic experiment using pea shape, Mendel conducted two separate genetic crosses. In the first cross the parent plants were “true breeding” for pea shape; one had round peas ( R )and the other had wrinkled (r). The first cross produced a filial 1 generation of all round peas. In the second cross, Mendel bred plants from the filial 1 generation. This cross produced different results. Out of approximately 1000 plants, about 75% were round and 25% were wrinkled.
From these experiments, Mendel developed four hypotheses. They include all BUT
Responses
A one heritable factor may be dominant and mask the other factor.one heritable factor may be dominant and mask the other factor.
B any organism that "shows" a heritable factor must be homozygous.any organism that "shows" a heritable factor must be homozygous.
C an organism has two "heritable factors", now called genes, one from each parent.an organism has two "heritable factors", now called genes, one from each parent.
D a sperm or egg carries only one heritable factor for each trait in the offspring.
From these experiments, Mendel developed four hypotheses. They include all BUT
Responses
A one heritable factor may be dominant and mask the other factor.one heritable factor may be dominant and mask the other factor.
B any organism that "shows" a heritable factor must be homozygous.any organism that "shows" a heritable factor must be homozygous.
C an organism has two "heritable factors", now called genes, one from each parent.an organism has two "heritable factors", now called genes, one from each parent.
D a sperm or egg carries only one heritable factor for each trait in the offspring.
Answers
GPT-4o mini
The statement that does not align with Mendel's hypotheses is:
**B any organism that "shows" a heritable factor must be homozygous.**
Mendel's findings indicated that an organism can be heterozygous (having one dominant and one recessive allele) and still display the dominant trait. Thus, it is not true that an organism showing a heritable factor must be homozygous; it can be either homozygous or heterozygous.
**B any organism that "shows" a heritable factor must be homozygous.**
Mendel's findings indicated that an organism can be heterozygous (having one dominant and one recessive allele) and still display the dominant trait. Thus, it is not true that an organism showing a heritable factor must be homozygous; it can be either homozygous or heterozygous.