High School

What are the modes of inheritance for fruit color, fruit shape, and leaf shape, respectively, in the mutant strain of tomatoes?

A. Sex-linked recessive, autosomal dominant
B. Autosomal recessive, autosomal dominant
C. Autosomal recessive, all autosomal dominant

Answer :

b autosomal recessive, autosomal dominant,

In the realm of genetics, particularly when discussing Mendelian inheritance, traits can be passed down through different modes. When considering the examples provided, we learn about traits such as seed color and shape in pea plants.

These traits are controlled by dominant and recessive alleles, where dominant traits are expressed even if only one dominant allele is present, while recessive traits require two recessive alleles to be expressed.

On the topic of the inheritance patterns for tomato traits — fruit color, fruit shape, and leaf shape in the mutant strain — without specific information, one must rely on general Mendelian principles. Typically, if the traits follow simple Mendelian inheritance patterns and assuming no other genetic complexities such as linkage, epistasis, or pleiotropy are involved, they would be either autosomal dominant or autosomal recessive based on how they express in progeny.

For example, seed color is often determined by a dominant allele, yellow, compared to the recessive green. Similarly, seed shape (round or wrinkled) follows the dominant-recessive relationship.

In a similar fashion, the characteristics of tomatoes such as fruit color, fruit shape, and leaf shape likely follow the same dominant-recessive inheritance patterns. However, specifying whether they are autosomal dominant or autosomal recessive requires observational data from breeding experiments or genetic tests.