اختبار على درس genes interactions

Which of the following crossing gives individuals their blood group antibody (anti-a) ? ………………

When crossing two yellow-coloured mice , the resulted offspring after birth were 12 mice. So, the number of yellow-coloured mice is about…………….

If two pea flower (sweet pea) plants with genotype (AABb) were crossed together, the percentage of appearance of white-coloured flowers in the offspring is……………………..

The number of plants that have white flowers in the generation resulted from crossing (AAbb) with (aaBb) of pea flower plant is ………………….

If the lethal gene is dominant, the genotype of individuals that die is ……………………..

The dominant lethal genes differs from the recessive lethal genes in all the following, except……………………..

The ratio of flowers colour of pea flower (sweet pea) plants in the second generation that resulted from crossing of two white-coloured plants, (AAbb) with (aaBB) is …………………..

A man whose blood group is (A) married to a woman has the same blood group , what is the genotype that wouldn’t appear in the offspring ? …………………

The inheritance of chlorophyll absence character in corn plant is considered a case of ……………….

If the blood group of the parents of a father is (O), it is impossible for the grandchildren to have a child with …………………….. blood group.

When crossing two pea flower plants both of them have (AABb) genotype , the percentage of white flowers in the resulted generation is …………….

Human blood groups are identified by……………………………

From the properties of blood group (B) is that …………………………

The percentage of yellow-feathered birds that resulted from crossing two red-feathered birds (RR) is ……………………..

The individual’s blood group is normally determined by………………

The number of individuals having negative Rhesus factor among 300 individuals of human beings is about …………………………….

If one of the parents has blood group (AB) , he/she can’t give birth to a child with ……………….. blood group.

Four brothers each them has a blood group that differs from the other, this indicates that the genotypes of their parents ‘ blood groups are………………

Inheritance of blood group (O) is similar to inheritance of colour character in which flowers ? ……………………

A person whose blood group is (O+) his / her red blood cells have………………….. antigen (s) on their surface.

When crossing two chickens one of them is black-feathered and the other is white-feathered, the members of the first generation will be………………………….. according to lack of dominance.

The genotype which causes the apperance of pink colour in the flowers of pea flower plant is ……………………

The excluded genotype for blood group of a man married to a woman with (AB) blood group and they gave birth to a child with (A) blood group is……………….

This crossing AaBB × aaBB will produce…………………..

The genotype can be determined from the phenotype in all the following traits, except ……………………………