Question

QUESTION 5

1. The replication of DNA requires tRNA to bring nucleotides to the strand of DNA that is being synthesized.

   True

   False

QUESTION 6

1. Which of the following individuals is homozygous for both genes A and B?

   		AABb
   		AaBb
   		AAbb
   		AsBB QUESTION 7

2. A chromosome is a sequence of:

   		genes
   		alleles
   		both A and B are true
   		neither A or B are true

QUESTION 8

1. Different genes:

   		will have different nucleotide sequences
   		will cause the synthesis of proteins that have different amino acid sequences
   		both A and B are true
   		neither A or B are true

QUESTION 9

1. Mitosis produces

   		diploid homologous chromosome pairs
   		haploid homologous chromosome pairs
   		either diploid or haploid homologous chromosome pairs

QUESTION 10

1. A mutation in a gene is always harmful.

   True

   False

QUESTION 11

1. A mutation in the nucleotide sequence of a gene can result in a change in the codon in its mRNA that can result in change in the amino acid in the gene's protein

   		true
   		false

QUESTION 12

1. Which of the following is the best definition of the term “semi-conservative replication”?

   		the duplication of DNA results in a double strand of DNA having one original and one new strand
   		the duplication of DNA results in a double strand of DNA having two original strands
   		the duplication of DNA results in a double strand of DNA having two new strands
   		none of the above

QUESTION 13

1. During cell division in a eukaryote cell, mitochondria would be inherited by the daughter cells as part of

   		interphase
   		cytokinesis
   		meiosis
   		mitosis

QUESTION 14

1. By definition, the two chromosomes in a non-sex determining homologous chromosome pair have the same sequence of:

   		genes
   		alleles
   		both genes and alleles
   		neither genes or alleles

QUESTION 15

1. How many alleles determine an individual's specific phenotype?

   		one
   		two
   		three or more

QUESTION 16

1. Mutations can create variation in a species because mutations can create new alleles.

   True

   False

QUESTION 17

1. If a species has 20 pairs of homologous chromosomes, the number of chromosomes in a diploid cell of this species is:           

   		10
   		20
   		40
   		no way to tell based on the information given

QUESTION 18

1. Which cellular process(s) results in the formation of paired homologous chromosomes?

   		mitosis
   		meiosis
   		fertilization
   		mitosis and fertilization

QUESTION 19

1. Alleles for certain genes when they are heterozygous in an individual may produce a phenotype in which either allele does not fully mask the expression of the other allele resulting in a phenotype that is somewhere between the phenotype of the two alleles.

   True

   False

QUESTION 20

1. Autosomes are chromosomes that determine the sex of an individual.

   True

   False

QUESTION 21

1. An individual that has the dominant phenotype for a gene will have which of the following genotypes:

   		homozygous dominant
   		homozygous recessive
   		heterozygous
   		homozygous dominant or heterozygous

QUESTION 22

1. If the genotype of an individual is Ff for a trait, some of its gametes will have the F allele and some of its gametes will have the f allele.

   		True
   		False

QUESTION 23

1. Which of the following is part of cellular division (replication)?

   		meiosis
   		cytokinesis
   		meiosis and cytokinesis
   		none of the above

QUESTION 24

1. a Punnett Square can be described as a matrix that gives all of the possible genotypes (allele combinations) for a gene from a mating when given the genotypes (alleles0 of the parents for the gene.

   True

   False

QUESTION 25

1. Complementary base pairing in DNA means that adenine can only pair with guanine and thymine can only pair with cytosine.

   True

   False

QUESTION 26

1. Before a mutation a strand of DNA has the sequence: A-T-T-C-G. After a mutation it has the following the sequence. A-A-T-C-G. What type of mutation did the DNA strand undergo?

   		deletion
   		addition
   		substitution

QUESTION 27

1. If a cell is haploid, its number of chromosomes will be equal to its number of chromosome pairs.

   True

   False

QUESTION 28

1. An individual that is homozygous for the sex determining chromosome is:

   		male
   		female

QUESTION 29

1. When DNA undergoes a mutation:

   		a nucleotide base can be added, deleted or substituted
   		the resulting protein’s adaptiveness may increase, decrease, or not change
   		both A and B are true statements
   		neither A or B are true statements

QUESTION 30

1. Evoution can be described as:

   		a change is phenotype over time
   		a change in allele frequency or alleles over time
   		both A and B are true statements
   		neither A r B are true statements

Answer 1

5 FALSE as replication donot involve tRNA

6- AAbb is homozygous as it contains one type of allele - A and b

7- both a and b are true

8- both a and b are true as different sequences make different gene and which makes different proteins

9-diploid homologous chromosome pairs

10- false as some mutations donot result in change

11- true when tge codon reading changes the amino acid automatically changes

12-the duplication of DNA results in a double strand of DNA having one original and one new strand

as semi conservative means genetic material is preserved in form of original strand

13- mitosis as duplication occurs in mitosis process

14- both genes and alleles

15- three or more

16- true as mutation can result in change in allele

17- 20 only as n remains same

18- meiosis

19- true case of incomplete dominance

20- false they are not sex chromosomes

21- homozygous dominant or heterozygous

22- true- as independent assortment takes place

23- none of these . all are part of cell cycle

24- true

25- false as Adenine pairs with thymine and cytosine with guanine

26- substituition of a with t

27- false. as they donot have any direct relation

28- female example xx

29- both a and b statements are true

30- both a and b statements are true