Fruit colour in squash is an example of:
1. Recessive epistasis
2. Dominant epistasis
3. Complementary genes
4. Inhibitory genes
1. | 50% | 2. | 25 % |
3. | 100% | 4. | no chance |
A man whose father was colour blind marries a woman who had a colour blind mother and a normal father. What percentage of male children of this couple will be colour blind?
1. 25%
2. 0%
3. 50%
4. 75%
A human female with Turner's syndrome:
1. has 45 chromosomes with XO
2. has one additional chromosome.
3. exhibit male character
4. is able to produce children with a normal husband.
Which of the following statements is not true of two genes that show 50% recombination frequency?
1. | The genes are tightly linked. |
2. | The genes show independent assortment. |
3. | If the genes are present on the same chromosome, they undergo more than one crossing-over in every meiosis. |
4. | The genes may be on different chromosomes. |
The incorrect statement with regard to Haemophilia is:
1. | It is a recessive disease |
2. | It is a dominant disease |
3. | A single protein involved in the clotting of blood is affected |
4. | it is a sex-linked disease. |
A normal-visioned man whose father was color blind marries a woman whose father was also colorblind. They have their first child as a daughter. What are the chances that this child would be colorblind?
1. 100%
2. 0%
3. 25%
4. 50%
F2 generation in a Mendelian cross showed that both genotypic and phenotypic ratios are same as 1: 2: 1. It represents a case of:
1. Co-dominance
2. Dihybrid crosses
3. Monohybrid crosses with complete dominance
4. Monohybrid crosses with incomplete dominance