<span>The gene sequence containing an operator, promoter and repressor is known as an operon. These genes are called as structural genes. the operon is regulated by the presence/absence of the inducer such as glucose/lactose. It may also be a constitutive operon, which works all the time.</span>
True, animal behavior is based on satisfying physiological needs.
An atom is most stable when its outermost shell is full with electrons.
Answer:
The red and white alleles for flower color must be codominant.
Explanation:
When two alleles are codominant there isn't a dominant-recessive relationship between alleles. In a heterozygous individual both alleles are equally expressed, and the individual will show both traits at the same time.
A true-breeding plant with red flowers (RR) is crossed with a true breeding plant with white flowers (WW), producing a homogeneous RW offspring. These flowers have both red and white petals, so these alleles are codominant.
A more familiar example of codominant alleles are the A and B alleles that determine blood types. A heterozygous person with both an A and a B allele has an AB genotype (both alleles are expressed at the same time).
