6.A scientist is studying a plant species in which the flower color genes are codiminant. The scientist crosses a plant with red flowers and a plant with white flowers. The offspring will most likely have..
A. Red flowers
B. White flowers
C. Pink flowers
D. Red flowers with white patches
7. In order for a child to inherit a recessive genetic disease, like sickle cell anemia, healthy parents must both...
A.have the disease
B. Be homozygous for the mutated that causes the disease
C. Be carries of the mutated gene that causes the disease
D. Have other offspring that have the disease
6. For this one you can consider the example of Snapdragon. Co-dominance is when both phenotypes are expressed. A mixture of red-colour genes and white-colour genes would lead to pink colouration.
7. This is an autosomal recessive disease. So, both parents have to be carriers. It is possible for them to not have the disease (and be carriers) and still pass it on. So, (C) would be correct.
To answer question 6, where a scientist is studying a plant species with codominant flower color genes, the scientist crosses a plant with red flowers and a plant with white flowers.
Codominance means that both alleles for the flower color gene are expressed equally in the offspring. In this case, since one parent has red flowers and the other has white flowers, the most likely outcome is that the offspring will have pink flowers. So, the correct answer is C. Pink flowers.
To answer question 7, where a child needs to inherit a recessive genetic disease like sickle cell anemia, from healthy parents:
In order for a child to inherit a recessive genetic disease, both parents must carry the mutated gene that causes the disease. If only one parent carries the mutated gene and the other parent does not, the child will not inherit the disease.
Therefore, the correct answer is C. Both parents must be carriers of the mutated gene that causes the disease. It is important to note that being a carrier means having one copy of the mutated gene while remaining unaffected by the disease.