Question

Clownfish exhibit three phenotypeni red, yellow, and orange. If a red clownfish is mated with a yellow clownfish, the resulting progeny are all orange. a. What type of inheritance pattern do you suspect? incomplete dominance b. Construct a Punnett square to illustrate a cross between two RRRR orange clownfish. (make up letters to represent the alleles) 15. RRR Genotypic ratio: la: Phenotypic ratio: 1: 2!! There are 4 alleles (C.ch, ch, and e) of the gene for coat color in Netherland dwarf rabbits. Combinations of the 4 alleles result in 5 different genotypes. Possible CC, Ceh, Ceh. Co eheh ehehehehehehe ce genotypes Phenotype Dark gray Chinchilla Light gray Point Albino Construct a Punnet square illustrating a cross between a dark gray rabbit (Ce) and a light gray rabbit (he). What phenotypes are possible in the progeny? cch Cc ch cc ch ch chc Circle the letter of all the following crosses that can yield albino offspring. If albino offspring are possible, give the genotypes of the parents. a. Dark gray x Chinchilla b. Dark gray x Light gray c. Chinchilla x Point d. Chinchilla x Albino e. Point x Point 16. In shorthorn cattle, coat color may be red, white, or roan. Roan is an intermediate phenotype expressed as a mixture of both red and white hairs. Since both red and white hairs are seen in the intermediate phenotype, this type of inheritance pattern is a. When a red cow is mated to a white bull, all the offspring will be roan. How would you express the genotypes of the parents & offspring? Red cow - _ White bull Roan offspring b. If two roans are crossed, what proportion of their offspring will be Red? Roan? White? 188 For Paperwork

no 15&16

Answer 1

15)

	C	ch
cch	Ccch	cchch
c	Cc	ccch

Cc^{ch dark gray}

c^hc^{Ch light gray}

^{C c dark gray}

cc^{Ch light gray}

A) dark gray Cc × chinchilla c ^ch c ^ch

  Cc^{ch ,} cc^ch

albino offspring are not possible.

b) Dark gray × light gray

Cc × c^chc

Cc^{ch ,} cc^{ch ,}  cc^ch , cc

cc albino

Genotype of parents has mentioned above.

c) chinchilla ×× point

c^ch c^{ch X} c^hc^h/ c^h c

albino offspring is not possible

d) chinchilla X albino

c^ch c^{ch X cc}

^{albino offspring not possible}

^{e) point X point}

c^hc x c^h c

c^hc cc

albino offspring are possible

16) codminant type phenotype

in this type of phenotype both allels express but there is mo mixing of color.

a) red cow = RR

white cow = rr

roan offspring = Rr

b) roan X roan

Rr X Rr

RR, Rr, rr

Red , roan ,, white

1: 2: 1