Biology Notes for Class 10 Chapter 15

Which of the following statements regarding genes is False?

Who proposed the mechanism of organic evolution in 1838?

A cross in which two contrasting traits studied at a time is called__________

In which part of cell, transcription takes place?

The position of gene on chromosome is known as______________

It is the process by which the better genetic variations become more common in successive generations of population______________

Mendel used___________ pea plants in his experiments.

Copies of chromatids of chromosomes are made through the process called______

What will be the color of flowers produced as a result of cross between red and white flowered 4’O clock plants?

How many types of differences shown by individuals of same species?

Specific sequence of DNA nucleotide is copied in the form of mRNA in a process_________

Example of discontinuous variation is __________

What make the backbone of DNA molecule?

Charles Darwin publish a book “in the origin of species by means of Natural selection” in____

Among following which is an example of co-dominance?

Nucleosome is composed of_________

Which of the following genes will be termed as Homozygous Recessive?

DNA is the genetic material, it contains the instructions to direct all the functions of_____

In which type of variations, the phenotypes show a complete range of measurements from one extreme to the other is ______________

Branch of biology that deals with the study of inheritance is called as____________

Which variations show distinct phenotypes and phenotypes of such variations cannot be measured?

An organism has two different alleles for a single trait. Its genotype is said to be_______

It is a condition in which normal body pigments are absent__________

Charles Darwin proposed that organisms produce many more offspring than can possible survive on the limited amount of resources available to them. According to Darwin, the offspring that are most likely to survive are those that_________

The Specific combination of genes in an individual is known as_________

What is the Diploid (2n) number of humans?

Among following, which is the source of variations?

Dominant alleles are represented by ________ Letter and recessive alleles by _________ letter.

DNA wraps around histone protein and forms rounded structures called as______

A DNA molecule consists of ____________ polynucleotide strands.

In 1953, __________ proposed the structure of DNA.

Pisum sativum is scientific name of ____________

What condenses into a chromosome?

Cytocine always pair with______________

In artificial selection, bred plants are known as_____________

Variations selected for their transmission to next generation are_______________

True breeding means___________

In England, moths had________

Chromosomes carry units of inheritance called as______________

The alternate forms of a gene are called as_____________

It is change in characteristics of a population or species of organisms over the course of generations_____________

Specific proteins have specific number and sequence of ________________

How many pairs of homologous chromosomes are there in human body cell?

A purple-flowered pea plant has the genotype PP. which of the following statements about this plant is False?

________ gave the first hint at evolution?

Outside backbone of double helix is made up of _________

How many hydrogen bond are formed between cytosine and guanine?

Physical appearance or color of an organism is called__________

Expression of genotype in the form of trait is____________

Two chromosomes of a pair are known as ___________

Which component of cell is involved in translation?

Among following, which is the genotype of blood group O?

Transmission of characteristics from parents to offsprings is called as______________

Zygote receive only _______ alleles from each parent

How many genetically different kinds of gametes an individual with genotype AAbb can produce?

Ribosome reads the sequence of mNRA nucleotides and joins specific amino acids to form proteins. This step is known as____________

Chromatin is made up of ___________

1. Sequence of amino acids in a protein is controlled by sequence of ________ in DNA.

An organism’s expressed physical trait, such as seed color or pod shape, is called its______

Which is favorable variation in moths after industrial revolution?

The offspring of P1 generation are ___________

Inside of double helix consists of __________

It is situation where two different alleles of a gene pair express themselves completely, instead of showing a dominant-recessive relationship is called__________

Mendel’s primary contribution to our understanding of inheritance was__________

It is a situation where in heterozygous genotypes, both the alleles express as a blend and neither allele is dominant over the other?

In which part of cell, transcription takes place?

mRNA is synthesized by__________

Genes contain instruction for the synthesis of _________

Pink flowered Four O Clock plant is an example of _____________

The trait of round seeds was dominant over____________

A cross in which only one trait is studied is called_______

In _______ James Watson and Francis Crick proposed the structure of DNA.

The possible number of chromosomal combinations are_____________

A dominant allele only suppresses the expression of recessive allele; it does not affect its___________

The first filial generation is denoted by____________

Which of the following is not an inheritable trait?

All living things had been created in their current form only a few thousand years ago. This idea is known as________________

Adenine always pair with__________

Each trait studied in pea plant had ______ distinct form.

Feet size in Man is an example of ____________

How many hydrogen bonds formed between adenine and thymine?

In the cross-pollination between a true-breeding yellow pod plant, where green pod color is dominant, the resulting offspring’s (F1 generation) will be______

Working of DNA is also called___________

Intentional breeding between individuals for certain traits, or combination of traits is called as_________

Who developed fundamental principles of genetics?

A DNA molecule consists of _______ polynucleotide strands.