DNA And Genes (Level 2) Question Preview (ID: 61002)


Seventh Grade Genetics. Entry Level. TEACHERS: click here for quick copy question ID numbers.

Which allele is recessive?
a) A
b) B
c) T
d) r

What is a phenotype?
a) brown eyes
b) Bb
c) T = A or G = C
d) all 20,000 genes

Which allele is dominant?
a) a
b) T
c) b
d) r

The gene combination for a trait.
a) genotype (Aa)
b) phenotype (brown hair)
c) chromosomes
d) Base pairing (A = T)

A different form of a gene (brown hair vs. red hair).
a) chromosome
b) genome
c) allele
d) nucleus

A DNA structure that carries many organized genes.
a) allele
b) chromosome
c) ribosome
d) cytoplasm

This structure holds and protects DNA.
a) mitochondria
b) ribosome
c) cell membrane
d) nucleus

A section of DNA that codes for a trait or protein.
a) gene
b) nucleus
c) chromosome
d) base pair

What allele combination is heterozygous?
a) aa
b) dd
c) rr
d) Bb

What allele combination is homozygous recessive?
a) bb
b) Gg
c) AA
d) R

What allele combination is homozygous dominant?
a) Aa
b) TT
c) aa
d) g

Allele combination = Jj
a) homozygous recessive
b) homozygous dominant
c) heterozygous
d)

Allele combination = rr
a) homozygous recessive
b) homozygous dominant
c) heterozygous
d)

Allele combination = Ff
a) heterozygous
b) homozygous recessive
c) homozygous dominant
d)

All the genetic material to make an organism?
a) genome
b) genotype
c) gene
d) base pair

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