Q: WHAT IS AN ORGANISM'S GENETIC MAKEUP CALLED?

GENOTYPE. The genotype is the set of alleles an organism carries; the phenotype is how they're expressed.

Q: AN ALTERNATIVE VERSION OF A GENE IS CALLED AN ___.

ALLELE. Alleles are different forms of the same gene found at the same locus.

Q: WHAT TERM MEANS HAVING TWO IDENTICAL ALLELES OF A GENE?

HOMOZYGOUS. A homozygous organism has two identical alleles, e.g. AA or aa.

Q: WHAT IS A POSITION OF A GENE ON A CHROMOSOME CALLED?

A LOCUS. A locus is the fixed position of a gene on a chromosome.

Q: A DIAGRAM USED TO PREDICT CROSS OUTCOMES IS A ___ SQUARE.

PUNNETT. A Punnett square predicts the genotype and phenotype ratios of offspring.

Q: A DIHYBRID CROSS OF TWO HETEROZYGOTES GIVES WHICH RATIO?

9 : 3 : 3 : 1. AaBb x AaBb gives a 9:3:3:1 phenotypic ratio when genes assort independently.

Q: WHEN BOTH ALLELES ARE FULLY EXPRESSED, THEY ARE ___.

CODOMINANT. In codominance both alleles are expressed, as in the AB blood group.

Q: WHICH HUMAN CHROMOSOMES DETERMINE BIOLOGICAL SEX?

X AND Y. The X and Y chromosomes are the sex chromosomes; XX is female, XY is male.

Q: WHAT IS THE INHERITANCE OF A TRAIT CONTROLLED BY MANY GENES?

POLYGENIC. Polygenic traits are controlled by several genes, giving continuous variation.

Q: WHICH TEST CHECKS IF OBSERVED RATIOS MATCH EXPECTED RATIOS?

CHI-SQUARED. The chi-squared test compares observed and expected genetic ratios for significance.

Question 1

WHAT IS AN ORGANISM'S GENETIC MAKEUP CALLED?

Accepted Answer

GENOTYPE

Question 2

AN ALTERNATIVE VERSION OF A GENE IS CALLED AN ___.

Accepted Answer

ALLELE

Question 3

WHAT TERM MEANS HAVING TWO IDENTICAL ALLELES OF A GENE?

Accepted Answer

HOMOZYGOUS

Question 4

THE PHYSICAL EXPRESSION OF AN ORGANISM'S GENES IS ITS...?

Accepted Answer

PHENOTYPE

Question 5

AN ALLELE EXPRESSED ONLY WHEN HOMOZYGOUS IS SAID TO BE ___.

Accepted Answer

RECESSIVE

Question 6

WHAT IS A POSITION OF A GENE ON A CHROMOSOME CALLED?

Accepted Answer

A LOCUS

Question 7

A DIAGRAM USED TO PREDICT CROSS OUTCOMES IS A ___ SQUARE.

Accepted Answer

PUNNETT

Question 8

A HETEROZYGOUS CROSS Aa x Aa GIVES WHAT PHENOTYPE RATIO?

Accepted Answer

3 : 1

Question 9

A DIHYBRID CROSS OF TWO HETEROZYGOTES GIVES WHICH RATIO?

Accepted Answer

9 : 3 : 3 : 1

Question 10

WHEN BOTH ALLELES ARE FULLY EXPRESSED, THEY ARE ___.

Accepted Answer

CODOMINANT

Question 11

IN HUMANS, WHICH BLOOD GROUP SHOWS CODOMINANCE?

Accepted Answer

GROUP AB

Question 12

A CROSS WITH A HOMOZYGOUS RECESSIVE TO FIND AN UNKNOWN GENOTYPE IS A ___ CROSS.

Accepted Answer

TEST

Question 13

WHICH RATIO RESULTS FROM A TEST CROSS OF A HETEROZYGOTE?

Accepted Answer

1 : 1

Question 14

GENES ON THE SAME CHROMOSOME INHERITED TOGETHER ARE SAID TO BE...?

Accepted Answer

LINKED

Question 15

A GENE FOUND ONLY ON THE X CHROMOSOME SHOWS SEX ___.

Accepted Answer

LINKAGE

Question 16

WHICH HUMAN CHROMOSOMES DETERMINE BIOLOGICAL SEX?

Accepted Answer

X AND Y

Question 17

A FEMALE WITH ONE RECESSIVE SEX-LINKED ALLELE IS A ___.

Accepted Answer

CARRIER

Question 18

RED-GREEN COLOUR BLINDNESS IS COMMON IN MALES BECAUSE THEY?

Accepted Answer

HAVE ONE X CHROMOSOME

Question 19

WHAT IS THE INHERITANCE OF A TRAIT CONTROLLED BY MANY GENES?

Accepted Answer

POLYGENIC

Question 20

VARIATION SHOWING A RANGE OF VALUES, LIKE HEIGHT, IS ___ VARIATION.

Accepted Answer

CONTINUOUS

Question 21

IN THE HARDY-WEINBERG EQUATION, WHAT DOES 2pq REPRESENT?

Accepted Answer

HETEROZYGOTE FREQUENCY

Question 22

THE PASSING OF TRAITS FROM PARENTS TO OFFSPRING IS CALLED ___.

Accepted Answer

HEREDITY

Question 23

WHICH TEST CHECKS IF OBSERVED RATIOS MATCH EXPECTED RATIOS?

Accepted Answer

CHI-SQUARED

Question 24

AN ALLELE EXPRESSED EVEN WHEN HETEROZYGOUS IS SAID TO BE ___.

Accepted Answer

DOMINANT

Question 25

WHICH CELL DIVISION PRODUCES GENETICALLY VARIED GAMETES?

Accepted Answer

MEIOSIS

GENETICS AND INHERITANCE

More quizzes you might like…

PLANT BIOLOGY

CELL BIOLOGY AND MICROSCOPY

RATIOS, PROPORTIONS & PERCENTAGES

GLYCOLYSIS AND KREBS CYCLE

UNIVERSALS, ANALOGY AND ABDUCTION