NEW
Font size
WorksheetsHeredity - Complex Inheritance
Total questions: 9
Worksheet time: 5mins
Humans can be any height in a continuous range, because height is affected by the interaction of many genes. Height is a __________
autosomal trait
Sex-linked trait
Polygenic trait
Codominant trait
For an XX female to express a recessive sex-linked trait, she must have
A Y chromosome
One recessive allele
Two recessive alleles
Two dominant alleles
In chickens, some have feathers that are black and white checkered, caused by one white feathered parent and one black feathered parent. Which inheritance pattern is responsible?
codominance
complete dominance
polygenic inheritance
sex-linked
What are the possible phenotypes of chicken offspring when a black feathered rooster is crossed with a speckled hen?
Black only
Speckled Only
Black or speckled
Black, white, or speckled
A gene in horses controls coat color. A white horse is crossed with another white horse, and they have five female foals. 3 are white, and 2 are brown. This is best explained by...
The allele for white is dominant, and brown is recessive
The allele for brown is dominant, and white is recessive
The allele for white is sex-linked
The alleles for white and brown are codominant
If a blood type AB woman marries a heterozygous type B man, their children could have all blood types except
A
B
AB
O
The trait for flower color in the plants shown above is controlled by incomplete dominance. What percent of the offspring will have pink flowers?
0%
25%
50%
100%
“Four o’clock” flowers inherit their color through incomplete dominance. The Red (R) allele is incompletely dominant to the white (R’) allele. If an R R’ flower is crossed with an R R’ flower, what phenotypes would the offspring probably have?
25% red, 50% pink, 25% white
50% red, 25% pink, 25% white
25% red, 25% pink, 50% white
50% red, 50% white
The table shows the trait for fruit color, where R is incompletely dominant to R’. Heterozygous fruits are orange. If an orange (R R’) plant is crossed with a yellow (R’ R’) plant, what percent of offspring will be orange?
25%
50%
75%
100%
