6.1 Reproduction

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Question 9

Medium

Table 1 gives the classification of four animal species.

Table 1

Classification Group	Species 1	Species 2	Species 3	Species 4
Kingdom	Animalia	Animalia	Animalia	Animalia
Phylum	Chordata	Chordata	Chordata	Chordata
Class	Mammalia	Mammalia	Mammalia	Mammalia
Order	Carnivora	Carnivora	Carnivora	Carnivora
Family	Canidae	Canidae	Canidae	Felidae
Genus	Canis	Vulpes	Canis	Felis
Species	lupus	vulpes	latrans	catus

Species 1 and 3 are the most closely related. What information in Table 1 gives evidence for this?

[1]

Figure 1 shows the inheritance of coat color characteristics in two species of mammals.

Figure 1: Genetic crosses for coat colour in guinea pigs and shorthorn cattle.

In guinea pigs and shorthorn cattle, the coat color characteristic is controlled by one pair of alleles.
The parental generation animals are homozygous for these traits.
In heterozygous guinea pigs, the allele for black coat color is dominant ( $B\,$ is the dominant black-coat allele, $b\,$ is the recessive brown-coat allele).
In heterozygous shorthorn cattle, the alleles for coat color are codominant ( $C^R\,$ is the red-coat allele, $C^W\,$ is the white-coat allele).

Use these symbols to answer the following questions:

What is the genotype of the black-coated guinea pigs in the $F_1\,$ generation?

[1]

What is the genotype of a white-coated shorthorn cow?

[1]

A breeder crossed two roan-coated ( $C^R C^W$ ) shorthorn cattle. Write down the expected phenotypes of all possible offspring.

[1]

What percentage of the offspring would we expect to have roan coats?

[1]

6.1 Reproduction

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47

Question 9

Medium

Table 1 gives the classification of four animal species.

Table 1

Classification Group	Species 1	Species 2	Species 3	Species 4
Kingdom	Animalia	Animalia	Animalia	Animalia
Phylum	Chordata	Chordata	Chordata	Chordata
Class	Mammalia	Mammalia	Mammalia	Mammalia
Order	Carnivora	Carnivora	Carnivora	Carnivora
Family	Canidae	Canidae	Canidae	Felidae
Genus	Canis	Vulpes	Canis	Felis
Species	lupus	vulpes	latrans	catus

Species 1 and 3 are the most closely related. What information in Table 1 gives evidence for this?

[1]

Figure 1 shows the inheritance of coat color characteristics in two species of mammals.

Figure 1: Genetic crosses for coat colour in guinea pigs and shorthorn cattle.

In guinea pigs and shorthorn cattle, the coat color characteristic is controlled by one pair of alleles.
The parental generation animals are homozygous for these traits.
In heterozygous guinea pigs, the allele for black coat color is dominant ( $B\,$ is the dominant black-coat allele, $b\,$ is the recessive brown-coat allele).
In heterozygous shorthorn cattle, the alleles for coat color are codominant ( $C^R\,$ is the red-coat allele, $C^W\,$ is the white-coat allele).

Use these symbols to answer the following questions:

What is the genotype of the black-coated guinea pigs in the $F_1\,$ generation?

[1]

What is the genotype of a white-coated shorthorn cow?

[1]

A breeder crossed two roan-coated ( $C^R C^W$ ) shorthorn cattle. Write down the expected phenotypes of all possible offspring.

[1]

What percentage of the offspring would we expect to have roan coats?

[1]

6.1 Reproduction

Question 9

Table 1

6.1 Reproduction Questions

6.1 Reproduction

Question 9

Table 1

6.1 Reproduction Questions