Question

compare and contrast spermatogenesis and

A A- Aabber Aabbcc AaBb AaBbcc AaB 1 Normal 1 No Spac... Heading Heading 2 Title Styles Paragraph Chapter 19 Homework name *Point values shown in bold print inside parentheses. A new mammalian species has been discovered, called cubbles due to their resemblance to baby bears. They exhibit considerable phenotypic diversity. Some traits appear to show complete dominance, some show incomplete dominance, and some traits appear to be sex-linked 1. Curled tails (C) appear to be dominant over straight tails (c) Draw a Punnett square showing the possible genotypes of a cross between two heterozygous individuals. (2) What proportion of offspring will have curled tails? (1) What proportion will have straight tails? (1) 3. Tongue color in cubbles appears to exhibit incomplete dominance. Some have red tongues (1). some have yellow tongues (y), and heterozygous cubbles have orange tongues. Draw a Punnett square showing the possible genotypes of a cross between two individuals that are heterozygous for tongue color. (2) Focus hp)

Answer 1

Ans  

Since the question is incomplete assuming the difference is between oogenesis and spermatogenesis.

Speematogenesis is the process of formation of sperms from spermatogonia . Oogenesis is the process of formation of ovum or egg from oogonia.

Spermatogenesis occurs in seminiferous tubules in testis and oogenesiscurs in the ovary.

Spernatogenesis starts at puberty and continues throughout lifetime. Oogenesis starts at fetal stage and is paused until puberty and later continues till menopause.

One spermatogonium gives rise to 4 spermatids. While one oogonim gives rise to one ovum.

Sperms are smaller than spermatocytes while ovum is larger than oocytes.

No polar body is formed in spermatogenesis but three polar odies are formed along with ovum in oogenesis .

Spermatogenesis forms small millions of motile gametes while oogenesis forms one large non motile gamete.

Attaching image .

Curled tail =c straight tail = e heterozygous father = Ce heterozygous mother Cc Parents – Ce & Cc. ccclc cllc ce ] 4 3/4th or 75% off springs will have curled tails as one dominant allele C in a gene would suppress the effects of recessive allele c. yeca а е ие DY OY b 1/4th or 25% offsprings will be straight tailed as the genotype is homozygous recessive

if this helps pls give it a positive rating. Thank you

red tongue ar Yellow tongue=y brange tongue - heterozygous = sy. - sy x sy a etesoraons Parents ou genotypic ratio = 1828 (pro syemy) 50% of 42 offsprings will have range tongue