Genetics 1

Question 1

These are the different versions of genes for a single trait.

Answer 1

ALLELES are the different versions of genes for a single trait.

Question 2

This is the 1st generation of a genetics experiment and is composed of Purebred Parents with opposite alleles. (BB x bb)

Answer 2

The P GENERATION is the 1st generation of a genetics experiment and is composed of Purebred Parents with opposite alleles.
(BB x bb)

Question 3

These are physical characteristics that are controlled by genes.

Answer 3

TRAITS are physical characteristics that are controlled by genes.

Question 4

An allele is said to be this if it masks the expression on another allele.

Answer 4

DOMINANT alleles mask the expression of recessive alleles.

Question 5

This generation is composed of hybrid offspring of the P generation.

Answer 5

The F1 GENERATION is composed of hybrid offspring of the P generation.

Question 6

These are segments of DNA that act as instruction for making proteins.

Answer 6

GENES are segments of DNA that act as instructions for making proteins.

Question 7

This is the separation of alleles in a gene pair so that each parent only donates ONE gene to his or her child.

Answer 7

SEGREGATION separates parent alleles so that he or she only donates ONE gene to a child.

Question 8

This is a ‘weaker’ allele and will not be expressed if paired with a ‘stronger’ allele.

Answer 8

RECESSIVE alleles are weaker and can be masked by dominant alleles.

Question 9

The genotypes found in this generation are HH, Hh and hh.

Answer 9

The F2 GENERATION has HH, Hh, and hh organisms in it.

Question 10

These organisms that have 2 of the SAME alleles for a single trait.

Answer 10

PUREBREDS are organisms that have 2 of the SAME alleles for a single trait.

Question 11

These organisms carry both a dominant and recessive allele for a single trait.

Answer 11

HYBRIDS are organisms that carry both a dominant and recessive allele for a single trait.

Question 12

The PARENTS of this generation are BOTH HYBRIDS.

Answer 12

The F2 GENERATION is produced by crossing hybrids.

Question 13

This is the physical expression of genes.

Answer 13

A PHENOTYPE is a physical description of a trait.

Question 14

This is a pair, or combination, of genes that controls a trait.

Answer 14

A GENOTYPE is a pair, or combination, of genes that controls a trait.

Question 15

gg, Tt, HH are examples of one of this.

Answer 15

gg, Tt, and HH are all examples of GENOTYPES.

Question 16

Tall, blue eyes, red flowers are examples of this vocabulary word.

Answer 16

PHENOTYPE examples include tall, blue eyes, & red flowers.

Question 17

These are tools that scientists use to predict probable genetic outcomes.

Answer 17

PUNNETT SQUARES predict probable genetic outcomes.

Question 18

This word means two of the very SAME kind of alleles.

Answer 18

HOMOZYGOUS means two of the very same kind of allele.

Question 19

This word means a combination of two DIFFERENT alleles.

Answer 19

HETEROZYGOUS means a combination of two DIFFERENT alleles.

Question 20

These are matching chromosomes that carry genes for the same traits.

Answer 20

HOMOLOGOUS CHROMOSOMES are matching chromosomes that carry genes for the same traits.