Biology: Quiz 2 Patterns of Inheritance

If the parent genotypes are Aa and Aa, the offspring are expected to be _____.

1/2 AA and 1/2 aa or all Aa or 1/4 AA, 1/2 Aa, 1/4 aa

The probability that both of two tossed coins will come down heads is _____.

1/4

The F2 generation phenotypes resulting from the monohybrid cross of purebreds display a ratio of _____.

3:1

In the cross BB x bb, the percent of offspring in the F1 generation that will have the same genotype as one of their parents is ________.

50% or 25% or 0%

In considering the cross YyRr x YyRr, the phenotype ratios of the F2 generation will be _____.

9:3:3:1

Gregor Mendel is considered the Father of _____.

Genetics

_____ interact to produce a trait in which neither dominant gene can produce its effect in the presence of the other.

Multiple alleles or Chromosomes or Carriers

Suppose you have monohybrid snapdragons in your garden and you find that they produce red seeds to white seeds in the ratio of 3:1. If the alleles are designated R (red seeds) and r (white seeds), what are the probable genotypes of the snapdragons in your garden?

RR and Rr or RR only or Rr only or rr only

The outward appearance of a particular trait is called the

Wrong : Genotype

What is the genotype ration between the cross YyRr x YyRr?

YYRR:2YYRr:2Yyrr:4YyRr:YYrr:2YyRR:yyRR:2yyRr:yyrr

In a dihybrid cross, round (RR), yellow (YY) seeds were crossed with wrinkled (rr), green (yy) seeds. What were the phenotypes of the F1 generation?

all round and yellow

Different forms of a given gene are known as _____.

alleles

Mendel's principle of segregation implies that the two members of an allelic pair of genes ________.

are distributed to separate gametes or may contaminate one another or are associated dependently, depending on all other genes

The principle of _____ suggests that a plant with the genotype Tt will display a tall phenotype.

dominance

A P1 cross between a yellow seeded female (YY) and a green seeded male (yy) result in offspring that are _____.

genotypically different but phenotypically identical or genotypically and phenotypically identical or genotypically and phenotypically different

Genes that carry contrasting inheritance factors are called _________.

heterozygotes

A TT genotype is said to be ______.

homozygous or dihybrid

When neither gene in a genotype pair is dominant and neither gene is recessive, the genes are said to be _____.

incomplete dominant alleles

Someone who has the blood type AB had parents with _____ genes.

incomplete dominant or codominant or heterozygous

A family has seven sons. The chance that their eighth child will be a daughter is _____.

one chance in eight or one chance in two or practically none

Suppose you have monohybrid snapdragons in your garden and you find that they produce red seeds to white seeds in the ratio of 3:1. If the alleles are designated R (red seeds) and r (white seeds), what are the probable phenotypes of the parents (P1)?

half red and half white or all red or unable to determine

Which cross will yield four phenotypes in the 1:1:1:1 ratio?

rryy x rryy or RrYy x rryy or RrYy x RrYy