1.
Consider a dihybrid cross between two rabbits LlBb x LlBb. What are the phenotypic ratios of the offspring? (L = long ears l = short ears; B = black b = white)
2.
An organism with two identical alleles for a given trait is
3.
In Mendel's experiment, nature of seed coat, flower colour, position of flower, pod colour, height, etc., are referred to as
4.
When two Independent events are occurring simultaneously like in dihybrid cross, the ratio of each Joint phenotypic combination can be obtained by
5.
In sweet peas, genes C and P are necessary for colour in flowers. The flowers are white in the absence of either or both the genes. What will be the percentage of coloured flowers in the offspring of the cross Cc pp x cc Pp
6.
Mendel's dihybrid ratios are
7.
How many different types of genetically different gametes will be produced by heterozygous plant having the genotype AABbCc?
8.
Polygenic inheritance refers to which of the following conditions of inheritance?
9.
A group of individuals have lived for generations on an island. Their average height is 5 feet 2 inches. Eventually, ships stop by the islands bringing more fruits, vegetables and meats to their diet and more food overall. While the islanders continue to marry islanders and produce children, over generations the average height of the islander population reaches 5 feet 6 inches. What was most likely the main factor in this change?
10.
If one parent has blood group A and the other parent has blood group B, the offspring which blood group?
11.
In F, generation, a phenotypic ratio of 1:1:1:1 exhibits
12.
A man who is a carrier for cystic fibrosis marries a woman who is a carrier for cystic fibrosis. The couple in the above scenario has four children. How many of their children will have cystic fibrosis?
13.
Blood type in humans is the result of multiple alleles. Blood type is also an example of which type of inheritance pattern?
14.
The probability of an event, such as inheriting a recessive allele, is ½. The probability of inheriting a second recessive allele is ½ . What, then, is the probability of inheriting two recessive alleles?
15.
In Mendel's monohybrid cross, short stem trait becomes recessive in Fi generation. It will express in F2 generation only when/in:
16.
Inheritance of ABO blood group system is an example of
17.
When heterozygous tall plants are self-pollinated, then tall and dwarf plants are obtained. This explains
18.
When the phenotype of the heterozygote is intermediate between phenotypes of the two parental homozygote, then this relation is termed as
19.
What type of gametes will be formed by genotype RrYy?
20.
When a true breeding pea plant that has yellow seeds is pollinated by a plant that has green seeds, then all the F1, plants have yellow seeds. This means that the allele for yellow is
21.
Genotype of blood group 'A' will be
22.
Exchange of genetic material between chromatids of homologous chromosomes during meiosis is called
23.
A cross occurs between a chicken with white feathers and a chicken with black feathers. This results in offspring with some black feathers and some white feathers. What type of inheritance is this?
24.
If a child has O type of blood group and the father has B type, then the genotype of the father will be
25.
A female who is AO (iA, iO) mates with a male who is BO (iB, iO). What possible blood types can their children inherit
26.
If a child has O type of blood group and the father has B type, then the genotype of the father will be
27.
Mendel's law of segregation was based on the separation of alleles in the garden pea during
28.
A man who is a carrier for cystic fibrosis marries a woman who is a carrier for cystic fibrosis. What is the percentage probability that this couple will have a child with cystic fibrosis?
29.
In a plant, red fruit (R) is dominant over yellow fruit (r) and tallness (T) is dominant o shortness (t) If a plant with RRTt genotype is crossed with a plant that is rrtt, then
30.
An allele is said to be dominant if
31.
Sickle cell disease is the result of one gene abnormality. When two recessive alleles occur, sickle cell disease is inherited. The disease results in misshaped hemoglobin. What type of molecule is hemoglobin?
32.
The genotype of an individual is Rr Bb. How many different types of gametes will it produce based on the law of independent assortment?
33.
When a single gene affects two or more traits, this phenomenon is termed as:
34.
Distinct the genotypic ratio of the cross between Tt x Tt plants:
